Latest questions about "lg g4"

Had send G4 back to LG due the "restart looping" problem. I had bought PRO version of Soundabout. As LG reset back to factory, does it mean I have to buy it again?

I want to download Piano Tiles 2 on my LG G4, but it said it's not compatible with my phone.

I recently purchased a LG G4 phone and when I tried to install aDownloader it doesn't work with the phone and it's frustrating. How can I get this app to work on my new phone?