Hello this is the reply from Google Play team when I asked for more details about app rejection.
Thanks for contacting the Google Play team.
I see your app, ********* , was resubmitted earlier and is currently under review process.
Please note that it will take some time for your app to be processed for publishing on Google Play.
However, please refer to our previous email (Ticket No: XXXXXXX), as your app ( Closed Testing Track App Bundle Version: 1 ) still contains a non-certified ad SDK [ Facebook Ads SDK ] that is not compliant with the Families Ads Program.
Unfortunately we are unable to comment further on the specific basis of your issue as we are not able to provide technical support for your app. Thanks for your understanding that I am able to help you with issues related to Google Play policies only.
You can read through the APIs and SDKs section (#5) of the Families Policy Requirements.
Additionally, I see that you have not deactivated your non-compliant Version code in your latest submission. Please note that all active APKs ( including Alpha, Beta, production and internal testing ) of your app should be compliant with our policy. Once an APK gets enforced for policy violation, it will remain as a violating version code. Please make sure to deactivate the APK Version code mentioned above and increment the version number of the APK.
Thanks for your understanding and for your continued support of Google Play.
The Google Play Team
The mail was received on 13th Nov and when I saw Google Play Console Dashboard the Latest version of app was shown as review. And today when visited the dashboard the app was shown live.
What I found was I have a closed testing track and a open testing track. The closed testing track was updated to the latest version code of the app while the open testing track was still on version 1, so as per mentioned in mail
Please make sure to deactivate the APK Version code mentioned above I updated open testing track by creating new release of latest version code.