Hello.
Please try the instructions given on this link https://android-fix.com/google-play-problems/59-device-is-not-certified-by-google.html let us know if you need further assistance on that.
Please try the instructions given on this link https://android-fix.com/google-play-problems/59-device-is-not-certified-by-google.html let us know if you need further assistance on that.