Kindly help on this one (We’ve detected that your app is using an old version of the Google Play Developer API. From December 1 2019, versions 1 and 2 of this API will no longer be available. Update to version 3 before this date.)
This is a message I received from Google Play Console
Greetings to you. If you need to fix this issue out, contact me privately, thanks.
Your dearest bro,
Mody