Remove Captcha verification on firebase phone auth in Android

Question

I'd like to ask how to Remove Captcha Verification with Firebase Phone Auth in Android.

1. I've uploaded App signing key certificate's (SHA-1 and SHA-256) from Android Console to Firebase. enter image description here enter image description here

2. I've enabled App Integrity in Android Console and I've linked it with the right Google Cloud project. enter image description here

3. I've enabled Google Play Integrity in Google Cloud Console. enter image description here

4. I'm using last libraries recommended into the Firebase Phone Auth doc. (https://firebase.google.com/docs/auth/android/phone-auth).

5. I'm using a real device (Google Pixel 4a) with Google Services installed.

6. The app is available for download in Google Play store.

7. The Android project is new, so I can't enable SafetyNet because isn't available right now.

With all the previous steps, when I try to do Firebase Phone Auth, I'm getting this result:

enter image description here

I think the Google Play Integrity verification is failing, and this is why the CAPTCHA code verification appears.

Have I forgotten any mandatory step?

Anyone is having the same problem?

Thanks in advance.