A while ago I purchased a DJI RC Pro with the hope of learning to do mapping. I had difficulty installing the mapping app, so I deleted the APK. Since then, while flying, I receive pop up ads that take over the screen. I can't manually close the ad but it goes away after a short bit of time, which feels like an eternity while flying. All I can do is to release the controls and wait.  Not knowing what to do to stop this, I disabled Firefox, but that hasn't worked.

I'm at a loss. Can anyone provide some assistance?

Thank you.

Might be best to backup any files you want on the controller and then factory reset it and start again clean.  - Settings > System > Reset options > Erase all data(factory reset)」.