OAuth Apple Login not completing

Hi there! I am currently stuck implementing the OAuth Flow for Apple in React Native & Expo in Appwrite Cloud, testing it with EAS Build for iOS on my iPhone.

I followed this guide: https://appwrite.io/blog/post/how-to-set-up-sign-in-with-apple

And set in the Apple Dashboard:

• Service Id
• Redirect URL: https://fra.cloud.appwrite.io/v1/account/sessions/oauth2/callback/apple/<project-id>
• Domain: fra.cloud.appwrite.io

and in the Appwrite Dashboard I set the same values for the service ID, pasted the correct key id, team id and the contents of the .p8 file.

Everything works up to the point where I use FaceId to login with my AppleID - then it tells me "Anmeldung nicht abgechlossen" (Login not completed), without any error message. I tried to add console logs, but the logs do not appear in my expo application during login, only after I hit cancel to return.

I double and triple-checked every variable in the project but cannot seem to make it work.

Is this a known issue for OAuth2 with Apple?

OAuth2 for Google works fine for me, I basically use the same implementation there.

I would appreciate any hints 🙂 Thank you!