Hey thanks for playing and trying my Game while it's in development !
About the Merge, I manage to fix the Problem and it will be fixed in the next release.
"Packs staying changed after you finish a run" this is also a known bug so I'll manage to fix that too ^^
For the Crashes, I don't get them on my device and I'll need to do some more Testing / Play-test.
Was that really bad as : you didn't ever finish a run, or did it happen some of the time ?