Google Play Console do not send send "Real-time developer notifications"

Troubleshooting

I am configuring my app mobile in Google Play Console to work togheter with RevenueCat but when i try to send "Real-time developer notifications" i get an error that say "Unable to send test notification".

I followed the documentation exactly like it is, but the error remains.

Can you help me?

What have you tried so far?

I followed all the documentation of Google and RevenueCat but the error remains.

Did you check FlutterFlow's Documentation for this topic?
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