diff --git a/src/actions/signup.ts b/src/actions/signup.ts
index ff4d44d..ab7ef3b 100644
--- a/src/actions/signup.ts
+++ b/src/actions/signup.ts
@@ -87,6 +87,9 @@ export const signup = {
         if (input.code) {
           await tx.setDirectSignupUser({ code: input.code, userId: user.id });
         }
+        if (uuid) {
+          await tx.linkDirectSignupUserByUuid({ uuid: uuid, userId: user.id });
+        }
       });
 
       sendWebhook(WebhookAction.Signup, {
diff --git a/src/actions/user.ts b/src/actions/user.ts
index e4260d8..71efc03 100644
--- a/src/actions/user.ts
+++ b/src/actions/user.ts
@@ -35,6 +35,10 @@ export const user = {
         uuid: input.uuid
       });
 
+      if (input.uuid) {
+        await db.linkDirectSignupUserByUuid({ uuid: input.uuid, userId: id });
+      }
+
       return {
         id: id
       };
@@ -146,10 +150,31 @@ export const user = {
     }
   }),
   addDirectInvitation: defineAction({
-    handler: async (_, context) => {
+    input: z
+      .object({
+        uuid: z.string().nullable(),
+        comment: z.string().nullable()
+      })
+      .optional(),
+    handler: async (input, context) => {
       Session.actionSessionFromCookies(context.cookies, Permissions.Users);
 
-      return await db.addDirectSignup({});
+      return await db.addDirectSignup({
+        uuid: input?.uuid ?? null,
+        comment: input?.comment ?? null
+      });
+    }
+  }),
+  editDirectInvitation: defineAction({
+    input: z.object({
+      code: z.string(),
+      uuid: z.string().nullable(),
+      comment: z.string().nullable()
+    }),
+    handler: async (input, context) => {
+      Session.actionSessionFromCookies(context.cookies, Permissions.Users);
+
+      await db.editDirectSignup(input);
     }
   }),
   deleteDirectInvitation: defineAction({
diff --git a/src/app/admin/directInvitations/DirectInvitations.svelte b/src/app/admin/directInvitations/DirectInvitations.svelte
index 1d0106f..69793e5 100644
--- a/src/app/admin/directInvitations/DirectInvitations.svelte
+++ b/src/app/admin/directInvitations/DirectInvitations.svelte
@@ -1,13 +1,38 @@
 <script lang="ts">
   import DataTable from '@components/admin/table/DataTable.svelte';
+  import CrudPopup from '@components/admin/popup/CrudPopup.svelte';
   import { confirmPopupState } from '@components/popup/ConfirmPopup.ts';
   import {
     deleteDirectInvitation,
+    editDirectInvitation,
     type DirectInvitation,
     directInvitations
   } from '@app/admin/directInvitations/directInvitations.ts';
 
-  // callback
+  // state
+  let directInvitationEditPopupDirectInvitation = $state(null);
+  let directInvitationEditPopupOpen = $derived(!!directInvitationEditPopupDirectInvitation);
+  let copiedCode = $state<string | null>(null);
+
+  // lifecycle
+  $effect(() => {
+    if (!directInvitationEditPopupOpen) directInvitationEditPopupDirectInvitation = null;
+  });
+
+  // callbacks
+  async function copyLink(directInvitation: DirectInvitation) {
+    try {
+      await navigator.clipboard.writeText(directInvitation.url);
+    } catch {
+      return;
+    }
+
+    copiedCode = directInvitation.code;
+    setTimeout(() => {
+      if (copiedCode === directInvitation.code) copiedCode = null;
+    }, 2000);
+  }
+
   function onDirectInvitationDelete(directInvitation: DirectInvitation) {
     $confirmPopupState = {
       title: 'Direkte Einladung löschen?',
@@ -21,8 +46,46 @@
   data={directInvitations}
   count={true}
   keys={[
-    { key: 'url', label: 'Link' },
+    { key: 'code', label: 'Code', sortable: true, transform: codeTransform },
+    { key: 'uuid', label: 'UUID', sortable: true },
+    { key: 'comment', label: 'Kommentar' },
     { key: 'user.username', label: 'Registrierter Nutzer', sortable: true }
   ]}
+  onEdit={(directInvitation) => (directInvitationEditPopupDirectInvitation = directInvitation)}
   onDelete={onDirectInvitationDelete}
+>
+  {#snippet codeTransform(code: string)}
+    <span class="font-mono text-xs">{code}</span>
+  {/snippet}
+
+  {#snippet extraActions(directInvitation)}
+    <button
+      class="cursor-pointer"
+      title={copiedCode === directInvitation.code ? 'Link kopiert' : 'Link kopieren'}
+      onclick={() => copyLink(directInvitation)}
+    >
+      {#if copiedCode === directInvitation.code}
+        <span class="iconify iconify-[heroicons--clipboard-document-check]"></span>
+      {:else}
+        <span class="iconify iconify-[heroicons--clipboard]"></span>
+      {/if}
+    </button>
+  {/snippet}
+</DataTable>
+
+<CrudPopup
+  texts={{
+    title: 'Direkte Einladung bearbeiten',
+    submitButtonTitle: 'Speichern',
+    confirmPopupTitle: 'Änderungen speichern',
+    confirmPopupMessage: 'Sollen die Änderungen gespeichert werden?'
+  }}
+  target={directInvitationEditPopupDirectInvitation}
+  keys={[
+    [{ key: 'code', type: 'text', label: 'Code', options: { required: true, readonly: true, dynamicWidth: true } }],
+    [{ key: 'uuid', type: 'text', label: 'UUID', options: { dynamicWidth: true } }],
+    [{ key: 'comment', type: 'textarea', label: 'Kommentar', options: { dynamicWidth: true } }]
+  ]}
+  onSubmit={editDirectInvitation}
+  bind:open={directInvitationEditPopupOpen}
 />
diff --git a/src/app/admin/directInvitations/SidebarActions.svelte b/src/app/admin/directInvitations/SidebarActions.svelte
index 0e30955..7f0b279 100644
--- a/src/app/admin/directInvitations/SidebarActions.svelte
+++ b/src/app/admin/directInvitations/SidebarActions.svelte
@@ -26,6 +26,10 @@
     confirmPopupMessage: 'Bist du sicher, dass die direkte Einladung erstellt werden soll?.'
   }}
   target={null}
+  keys={[
+    [{ key: 'uuid', type: 'text', label: 'UUID (optional)', default: null, options: { dynamicWidth: true } }],
+    [{ key: 'comment', type: 'textarea', label: 'Kommentar', default: null, options: { dynamicWidth: true } }]
+  ]}
   onSubmit={addDirectInvitation}
   bind:open={createPopupOpen}
 />
diff --git a/src/app/admin/directInvitations/directInvitations.ts b/src/app/admin/directInvitations/directInvitations.ts
index d0f358f..3652aad 100644
--- a/src/app/admin/directInvitations/directInvitations.ts
+++ b/src/app/admin/directInvitations/directInvitations.ts
@@ -1,7 +1,7 @@
 import { type ActionReturnType, actions } from 'astro:actions';
-import { writable } from 'svelte/store';
+import { get, writable } from 'svelte/store';
 import { actionErrorPopup } from '@util/action.ts';
-import { addToWritableArray, deleteFromWritableArray } from '@util/state.ts';
+import { addToWritableArray, deleteFromWritableArray, updateWritableArray } from '@util/state.ts';
 
 // types
 export type DirectInvitations = Exclude<
@@ -9,6 +9,11 @@ export type DirectInvitations = Exclude<
   undefined
 >['directInvitations'];
 export type DirectInvitation = DirectInvitations[0];
+export type DirectInvitationInput = {
+  code?: string;
+  uuid: string | null;
+  comment: string | null;
+};
 
 // state
 export const directInvitations = writable<DirectInvitations>([]);
@@ -24,18 +29,41 @@ export async function fetchDirectInvitations() {
   directInvitations.set(data.directInvitations);
 }
 
-export async function addDirectInvitation() {
-  const { data, error } = await actions.user.addDirectInvitation();
+export async function addDirectInvitation(directInvitation: DirectInvitationInput) {
+  const { data, error } = await actions.user.addDirectInvitation({
+    uuid: directInvitation.uuid,
+    comment: directInvitation.comment
+  });
   if (error) {
     actionErrorPopup(error);
     return;
   }
 
-  addToWritableArray(directInvitations, data);
+  addToWritableArray(directInvitations, { ...data, user: null });
+}
+
+export async function editDirectInvitation(directInvitation: DirectInvitationInput) {
+  const { error } = await actions.user.editDirectInvitation({
+    code: directInvitation.code!,
+    uuid: directInvitation.uuid,
+    comment: directInvitation.comment
+  });
+  if (error) {
+    actionErrorPopup(error);
+    return;
+  }
+
+  const existing = get(directInvitations).find((t) => t.code === directInvitation.code);
+
+  updateWritableArray(
+    directInvitations,
+    { ...existing, ...directInvitation } as DirectInvitation,
+    (t) => t.code === directInvitation.code
+  );
 }
 
 export async function deleteDirectInvitation(directInvitation: DirectInvitation) {
-  const { error } = await actions.user.deleteDirectInvitation(directInvitation);
+  const { error } = await actions.user.deleteDirectInvitation({ code: directInvitation.code });
   if (error) {
     actionErrorPopup(error);
     return;
diff --git a/src/components/admin/popup/CrudPopup.svelte b/src/components/admin/popup/CrudPopup.svelte
index 131365c..bb79c2c 100644
--- a/src/components/admin/popup/CrudPopup.svelte
+++ b/src/components/admin/popup/CrudPopup.svelte
@@ -89,6 +89,7 @@
     convert?: (value: KeyInputTypeOptionsConvert<T>) => V;
     validate?: (value: V) => boolean;
     required?: boolean;
+    readonly?: boolean;
     dynamicWidth?: boolean;
   };
 
@@ -193,6 +194,7 @@
                   bind:value={() => target[k.key] ?? k.default, (v) => onBindChange(k.key, v, k.options)}
                   label={k.label}
                   required={k.options?.required}
+                  readonly={k.options?.readonly}
                   dynamicWidth={k.options?.dynamicWidth}
                 />
               {:else if k.type === 'textarea'}
@@ -230,6 +232,7 @@
                   onSubmit={(user) => onBindChange(k.key, user, k.options)}
                   label={k.label}
                   required={k.options?.required}
+                  readonly={k.options?.readonly}
                   mustMatch={k.options?.mustMatch}
                 />
               {:else if k.type === 'password'}
diff --git a/src/db/database.sql b/src/db/database.sql
index 7138d0d..4bc6754 100644
--- a/src/db/database.sql
+++ b/src/db/database.sql
@@ -28,16 +28,10 @@ CREATE TABLE IF NOT EXISTS blocked_user (
 -- direct signup
 CREATE TABLE IF NOT EXISTS direct_signup (
     code CHAR(255) NOT NULL UNIQUE,
-    user_id INT,
-    FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE CASCADE
-);
-
--- whitelist user
-CREATE TABLE IF NOT EXISTS whitelist_user (
-    uuid VARCHAR(36) NOT NULL PRIMARY KEY,
+    uuid VARCHAR(36) UNIQUE,
     comment TINYTEXT,
-    user_id INT UNIQUE,
-    FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE SET NULL
+    user_id INT,
+    FOREIGN KEY (user_id) REFERENCES user(id)
 );
 
 -- report
diff --git a/src/db/database.ts b/src/db/database.ts
index cc3c953..a9ed456 100644
--- a/src/db/database.ts
+++ b/src/db/database.ts
@@ -125,24 +125,17 @@ import {
   deleteDirectSignup,
   type DeleteDirectSignupReq,
   directSignup,
+  editDirectSignup,
+  type EditDirectSignupReq,
   getDirectSignupByCode,
   type GetDirectSignupByCodeReq,
   getDirectSignups,
   type GetDirectSignupsReq,
+  linkDirectSignupUserByUuid,
+  type LinkDirectSignupUserByUuidReq,
   setDirectSignupUser,
   type SetDirectSignupUserReq
 } from '@db/schema/directSignup.ts';
-import {
-  addWhitelistUser,
-  type AddWhitelistUserReq,
-  deleteWhitelistUser,
-  type DeleteWhitelistUserReq,
-  editWhitelistUser,
-  type EditWhitelistUserReq,
-  getWhitelistUsers,
-  type GetWhitelistUsersReq,
-  whitelistUser
-} from '@db/schema/whitelistUser.ts';
 
 export class Database {
   protected readonly db: MySql2Database<{
@@ -150,7 +143,6 @@ export class Database {
     user: typeof user;
     blockedUser: typeof blockedUser;
     directSignup: typeof directSignup;
-    whitelistUser: typeof whitelistUser;
     report: typeof report;
     reportAttachment: typeof reportAttachment;
     reportStatus: typeof reportStatus;
@@ -176,7 +168,6 @@ export class Database {
         user,
         blockedUser,
         directSignup,
-        whitelistUser,
         report,
         reportAttachment,
         reportStatus,
@@ -223,14 +214,10 @@ export class Database {
   addDirectSignup = (values: AddDirectSignupReq) => addDirectSignup(this.db, values);
   setDirectSignupUser = (values: SetDirectSignupUserReq) => setDirectSignupUser(this.db, values);
   deleteDirectSignup = (values: DeleteDirectSignupReq) => deleteDirectSignup(this.db, values);
+  editDirectSignup = (values: EditDirectSignupReq) => editDirectSignup(this.db, values);
   getDirectSignups = (values: GetDirectSignupsReq) => getDirectSignups(this.db, values);
   getDirectSignupByCode = (values: GetDirectSignupByCodeReq) => getDirectSignupByCode(this.db, values);
-
-  /* whitelist */
-  addWhitelistUser = (values: AddWhitelistUserReq) => addWhitelistUser(this.db, values);
-  editWhitelistUser = (values: EditWhitelistUserReq) => editWhitelistUser(this.db, values);
-  deleteWhitelistUser = (values: DeleteWhitelistUserReq) => deleteWhitelistUser(this.db, values);
-  getWhitelistUsers = (values: GetWhitelistUsersReq) => getWhitelistUsers(this.db, values);
+  linkDirectSignupUserByUuid = (values: LinkDirectSignupUserByUuidReq) => linkDirectSignupUserByUuid(this.db, values);
 
   /* report */
   addReport = (values: AddReportReq) => addReport(this.db, values);
diff --git a/src/db/schema/directSignup.ts b/src/db/schema/directSignup.ts
index d6800bf..3cfb764 100644
--- a/src/db/schema/directSignup.ts
+++ b/src/db/schema/directSignup.ts
@@ -1,7 +1,7 @@
 import type { MySql2Database } from 'drizzle-orm/mysql2';
-import { int, mysqlTable, varchar } from 'drizzle-orm/mysql-core';
+import { int, mysqlTable, text, varchar } from 'drizzle-orm/mysql-core';
 import { user } from '@db/schema/user.ts';
-import { eq } from 'drizzle-orm';
+import { and, eq, isNull } from 'drizzle-orm';
 import { generateRandomString } from '@util/random.ts';
 import { siteUrl } from '@util/url.ts';
 
@@ -9,16 +9,32 @@ type Database = MySql2Database<{ directSignup: typeof directSignup }>;
 
 export const directSignup = mysqlTable('direct_signup', {
   code: varchar('code', { length: 255 }).unique().notNull(),
+  uuid: varchar('uuid', { length: 36 }).unique(),
+  comment: text('comment'),
   userId: int('user_id').references(() => user.id)
 });
 
-export type AddDirectSignupReq = {};
+export type AddDirectSignupReq = {
+  uuid?: string | null;
+  comment?: string | null;
+};
+
+export type EditDirectSignupReq = {
+  code: string;
+  uuid?: string | null;
+  comment?: string | null;
+};
 
 export type SetDirectSignupUserReq = {
   code: string;
   userId: number;
 };
 
+export type LinkDirectSignupUserByUuidReq = {
+  uuid: string;
+  userId: number;
+};
+
 export type DeleteDirectSignupReq = {
   code: string;
 };
@@ -29,14 +45,28 @@ export type GetDirectSignupByCodeReq = {
   code: string;
 };
 
-export async function addDirectSignup(db: Database, _values: AddDirectSignupReq) {
+export async function addDirectSignup(db: Database, values: AddDirectSignupReq) {
   const code = generateRandomString(16);
+  const uuid = values.uuid ?? null;
+  const comment = values.comment ?? null;
 
   await db.insert(directSignup).values({
-    code: code
+    code: code,
+    uuid: uuid,
+    comment: comment
   });
 
-  return { code: code, url: siteUrl(`signup/${code}`) };
+  return { code: code, url: siteUrl(`signup/${code}`), uuid: uuid, comment: comment };
+}
+
+export async function editDirectSignup(db: Database, values: EditDirectSignupReq) {
+  await db
+    .update(directSignup)
+    .set({
+      uuid: values.uuid ?? null,
+      comment: values.comment ?? null
+    })
+    .where(eq(directSignup.code, values.code));
 }
 
 export async function setDirectSignupUser(db: Database, values: SetDirectSignupUserReq) {
@@ -48,6 +78,15 @@ export async function setDirectSignupUser(db: Database, values: SetDirectSignupU
     .where(eq(directSignup.code, values.code));
 }
 
+export async function linkDirectSignupUserByUuid(db: Database, values: LinkDirectSignupUserByUuidReq) {
+  await db
+    .update(directSignup)
+    .set({
+      userId: values.userId
+    })
+    .where(and(eq(directSignup.uuid, values.uuid), isNull(directSignup.userId)));
+}
+
 export async function deleteDirectSignup(db: Database, values: DeleteDirectSignupReq) {
   return db.delete(directSignup).where(eq(directSignup.code, values.code));
 }
@@ -56,7 +95,13 @@ export async function getDirectSignups(db: Database, _values: GetDirectSignupsRe
   const directSignups = await db
     .select({
       code: directSignup.code,
-      user: user
+      uuid: directSignup.uuid,
+      comment: directSignup.comment,
+      user: {
+        id: user.id,
+        uuid: user.uuid,
+        username: user.username
+      }
     })
     .from(directSignup)
     .leftJoin(user, eq(directSignup.userId, user.id));
diff --git a/src/db/schema/whitelistUser.ts b/src/db/schema/whitelistUser.ts
deleted file mode 100644
index cfdad01..0000000
--- a/src/db/schema/whitelistUser.ts
+++ /dev/null
@@ -1,66 +0,0 @@
-import { int, mysqlTable, text, varchar } from 'drizzle-orm/mysql-core';
-import type { MySql2Database } from 'drizzle-orm/mysql2';
-import { eq } from 'drizzle-orm';
-import { user } from '@db/schema/user.ts';
-
-type Database = MySql2Database<{ whitelistUser: typeof whitelistUser }>;
-
-export const whitelistUser = mysqlTable('whitelist_user', {
-  uuid: varchar('uuid', { length: 36 }).primaryKey(),
-  comment: text('comment'),
-  userId: int('user_id')
-    .unique()
-    .references(() => user.id, { onDelete: 'set null' })
-});
-
-export type AddWhitelistUserReq = {
-  uuid: string;
-  comment?: string | null;
-  userId?: number | null;
-};
-
-export type EditWhitelistUserReq = {
-  uuid: string;
-  comment?: string | null;
-  userId?: number | null;
-};
-
-export type DeleteWhitelistUserReq = {
-  uuid: string;
-};
-
-export type GetWhitelistUsersReq = {};
-
-export async function addWhitelistUser(db: Database, values: AddWhitelistUserReq) {
-  await db.insert(whitelistUser).values(values);
-
-  return { uuid: values.uuid };
-}
-
-export async function editWhitelistUser(db: Database, values: EditWhitelistUserReq) {
-  await db
-    .update(whitelistUser)
-    .set({
-      comment: values.comment,
-      userId: values.userId
-    })
-    .where(eq(whitelistUser.uuid, values.uuid));
-}
-
-export async function deleteWhitelistUser(db: Database, values: DeleteWhitelistUserReq) {
-  return db.delete(whitelistUser).where(eq(whitelistUser.uuid, values.uuid));
-}
-
-export async function getWhitelistUsers(db: Database, _values: GetWhitelistUsersReq) {
-  return db
-    .select({
-      uuid: whitelistUser.uuid,
-      comment: whitelistUser.comment,
-      user: {
-        id: user.id,
-        uuid: user.uuid
-      }
-    })
-    .from(whitelistUser)
-    .leftJoin(user, eq(whitelistUser.userId, user.id));
-}
diff --git a/src/pages/api/users/index.ts b/src/pages/api/users/index.ts
index 5c8b37e..01ba2e7 100644
--- a/src/pages/api/users/index.ts
+++ b/src/pages/api/users/index.ts
@@ -45,6 +45,8 @@ export const POST = externalApi({
       if (input.code) {
         await tx.setDirectSignupUser({ code: input.code, userId: user.id });
       }
+
+      await tx.linkDirectSignupUserByUuid({ uuid: input.uuid, userId: user.id });
     });
 
     return new Response(null, { status: 201 });
diff --git a/src/pages/api/whitelist/index.ts b/src/pages/api/whitelist/index.ts
index fc4e937..8912e6b 100644
--- a/src/pages/api/whitelist/index.ts
+++ b/src/pages/api/whitelist/index.ts
@@ -4,7 +4,7 @@ import { db } from '@db/database.ts';
 export const GET = externalApi({
   auth: true,
   handler: async () => {
-    const whitelist = await db.getWhitelistUsers({});
+    const whitelist = (await db.getDirectSignups({})).filter((entry) => entry.uuid != null);
 
     return new Response(
       JSON.stringify({