I've updated the firebase library recently and didn't change anything else.

  implementation 'com.google.firebase:firebase-auth:20.0.1'
  implementation 'com.google.firebase:firebase-messaging:21.0.0'
  implementation 'com.google.firebase:firebase-storage:19.2.0' 
  implementation 'com.google.android.gms:play-services-auth:19.0.0'

but whenever a user tries to signup, a Recaptcha is showing for a few seconds and then sometimes redirects to a web browser (CustomChromeTab) after that OTP is received from firebase auth. It takes about 15-30 seconds. How to prevent the Recaptcha? However, I added the SHA1 and SHA256 in the firebase console and have not changed the code. Thanks.

Here is the screenshot of the captcha verification process: