I have updated my beatbuddy to 3.9.3 about a week ago. This is an intermittent issue, when playing part 1, I can transition to part 2 no issues always, but the problem is in part 2 , I cant always transition to the next part, really intermittent, sometimes it transitions just fine other times the screen is white and says transitions but stays on the same part again. I don’t recall this on my older firmware.
There are odd issues on current beta firmware, this will likely be addressed in the next release which is coming very soon