Solidus

Working here, too! In fact, when I loaded into the marketplace, it gave me the prompt for a previously uncompleted mine coin purchase. (I told it to finish, which it said it did, and then there were no coins, but I don't think I was actually owed any.)

In any event, it's working now. I don't know if it was the recent update or a backend change, but I hope the issue is solved for everyone in this thread.

Great observation, mitsuhiko:

I definitely remember running into a failed purchase issue immediately prior to having these issues. For a while there, every time I started the app, it would try to finish this sort of queued action, and it eventually seemed to go through properly. It’s happened before, too, but maybe this last instance was the cause of my crashes.

Same issue for me. My son is really bummed! 

Having this same issue on Switch. The latest patch was supposed to fix it, but I see no change.