An internal error has occurred. [ Firebase App Check token is invalid. ]

[Salim-Farran]

Hi,

The following exception is being thrown when i try to verify mobile phone number or create user with email and password for example: An internal error has occurred. [ Firebase App Check token is invalid. ]. Any idea on how to solve?
I've seen suggestions to use Xamarin.Firebase.AppCheck.PlayIntegrity library but it is not working as well. Any suggestions on how to solve?

Thanks