Anonymous Sign not working! Not generating Session Token!

Hi, everyone!

Trying to build my first multiplayer using NetCode and all that new good stuff. But, every time I have the same error when trying to authenticate anonymously. Printing "AnalyticsSessionInfo.identityToken" displays an empty string!

Errors:
[Authentication]: Token has expired. [...]
Unity.Services.Authentication.JwtDecoderecode<Unity.Services.Authentication.AccessToken> (string,Unity.Services.Authentication.WellKnownKey[]) (at Library/PackageCache/com.unity.services.authentication@2.1.1/Runtime/Utilities/Jwt/JwtDecoder.cs:51)
Unity.Services.Authentication.AuthenticationServiceInternal:CompleteSignIn ...
-----:::::
RequestFailedException: Failed to decode and verify access token.
Unity.Services.Authentication.AuthenticationServiceInternal.CompleteSignIn (Unity.Services.Authentication.SignInResponse response, System.Boolean enableRefresh) (at Library/PackageCache/com.unity.services.authentication@2.1.1/Runtime/AuthenticationServiceInternal.cs:504)...

Code (CSharp):

1. private async Task Authenticate()
2.     {
3.         Debug.Log($"Starting authentication...");
4.         await UnityServices.InitializeAsync();
5.  
6.         Debug.Log($"Signing In Anonymously Async...");
7.         await AuthenticationService.Instance.SignInAnonymouslyAsync();
8.     }

 

I know this post is a bit old, but I'm running into a similar issue. When I'm trying to authenticate on my machine, everything works as intended. But when I send a build of the game to my friend, he gets the exact same error

[Authentication]: Token has expired.
RequestFailedException: Failed to decode and verify access token.

We are pretty desperate at this point and we even tried installing unity on his pc and writing a short authentication script there. It still didn't work for him. Has anyone found a way to fix it?