Android build can't cast to game instance

v4.27.2 - I have a build that is working fine on 2 different PCs but when I try to play it on my S7 FE Tablet, the cast to the game instance fails forever. I have it recasting and the print string always says it fails. It casts fine on PC. Any ideas?

EDIT: It’s casting from the controller to the game instance and the game instance is set in the project settings.