I cannot link my authentication providers (Apple sign-in, Google sign-in) to my user account.

Authentication providers (Apple sign-in, Google sign-in) can only be linked to one user account.

Do you own multiple user accounts on our app?

For example, suppose you own two user accounts on our app.

• User ID: AAA
  Your current account.
  No providers linked to this account.
• User ID: BBB
  Your another account.
  Authentication providers (Apple sign-in, Google sign-in) linked to this account.
  When you sign in via the authentication provider, you are signing in to our app as this user.

If you want to link the authentication providers to the User ID: AAA, follow these steps.

• You sign in to User ID: BBB and unlink the authentication provider.
• You sign in to User ID: AAA and set up a link to your authentication provider.