HELP ASAP drastic changes back to menu with every ROM

[igoessens]

Hi guys,

I tried the demo version and found it working so well that I bought the full version.
However, not a single ROM I used before now works. If I select a ROM it immediately goes back to the menu. I tried restarting the phone and reinstalling the app, force quitting the app, getting a different ROM... Nothing seems to work.

My phone is a Meizu M2, but it seems weird to me that the demo works fine and the full version not.
It runs android 5.1, with a Flyme OS 4.5.3.2A over it (some stupid Iphone looking system - I do not approve but the phone was cheap).

Please help???

[Lordus]

Please check if 'Do not keep activities' is active in the Android developer settings.

[igoessens]

Did that, worked fine.
Now the problem is that my save files dissapear. Ive had to start pokemon anew three times now and I'm getting tired of it.
Any idea what it is? Otherwise it's a real dissapointment..

[Lordus]

Are you using any memory cleaner app, which could delete them?
The app itself can't really do that.

[igoessens]

The answer was that simple. Yes I think it was the memory cleaner and I made it leave drastic alone, so far all is well. Thanks for the help, I also set up automatic backups to Google Drive so it is impossible now to lose saves!