Game problem I can't fix

Usually uninstalling and reinstalling wonky software works. In this case a
kid's game. But this game, my daughter's favorite, keeps stopping after she
plays it for about 5 minutes. Sometimes 10 minutes. It worked fine on W7,
never a lock up or the "Engine has stopped working" error. The game is
called Fishdom-3 and is supposed to work on W10. None of the compatibility
setting made a difference.

I uninstalled and reinstalled fresh copies of this game several times but
cannot find anything in the registry to remove after uninstalling it. It's
leaving something behind. Yet when I reinstall the new copy just downloaded
from the 'net her info is still there as well as the level she was at when
the old copy froze. Where is this game hiding this info? Would THAT be
causing the problem? Why would a new copy just downloaded have access to
that info when the older copy of the game was uninstalled?

Where and how can I find where that info is stored so it can be removed?
How can I make this kid happy by fixing this problem?