Help With Aftermarket display
 

So, I am a owner of a 2017 c cabriolet (W205)

I am a tech geek so got the aftermarket android screen and installed it. Have been using it for a while but the bluetooth started to be a bit jammy and not work.

I decided to factory reset the display device, not thinking through that it will erase all the programs for CarPlay and rear side camera. Anyone had the same problem? Anyone have a solution to it? Or do I just have to buy a new display unit.

Need help.

Thanks