Hi Gammo,

To take these in order:
1. Is there no sound in music or sound effects, or just one of them? I assume you've checked the options screen and sounds are enabled. Are sounds turned on for the device itself? Do you get sounds OK in other games/apps? Did sound work in the earlier version?
2. This isn't a bug. The certificate is intended to appear only very rarely.
3. Sorry, I don't understand this; what does EPA mean?
4. Again, not a bug.