Google re-activated the full version again.
They told me the app (or screnshots) contain material from the title "You know you like it" by DJ Snake & AlunaGeorge.
Of course that wasn't the case. I don't even know this artist and the
cover doesn't look even similar to the ones I used in the screenshots. I
guess some algorithm at Google went crazy.
I'm sorry for the
inconvenience. In case you are one of the users who left a negative
feedback on Google Play, I would kindly ask you to change it. It clearly
wasn't my fault.