How to solve Google Play Certification ERROR in waydroid.
When launching waydroid with GAPPS for the first time you will be notified that the device is not certified for Google Play Protect. You can follow the instructions on screen to self certify your device, or here's a shortcut:
Install GAPPS
sudo waydroid init -s GAPPS -f
Run
sudo waydroid shell
Inside the shell run this command:
Use the string of numbers printed by the command to register the device on your Google Account at https://www.google.com/android/uncertified
Give the Google services some minutes to reflect the change, then restart waydroid