Phone Auth OTP not getting delivered - [ An invalid safety_net_token was passed. ]

[ProjectSi5]

I was using phone auth for many months, but randomly I stopped getting OTP's and this is the error that shows.

[SmsRetrieverHelper] SMS verification code request failed: unknown status code: 17028 An invalid safety_net_token was passed.
I/flutter (26696): This app is not authorized to use Firebase Authentication. Please verify that the correct package name and SHA-1 are configured in the Firebase Console. [ An invalid safety_net_token was passed. ]

I have added the SHA 1 and 256 keys (both release and build) to my firebase project. I have also enabled the Android Device Verification API on google cloud.