I know that the "gem and coins cost/consume 0" hack will crash the game if they're enabled while the club constellation menu is open. Try disabling those if you have them enabled.
I was trying to complete new 'Pumpkin Johnny Rises' Time-Limited Side Quest but the game has been stuck here [screenshot] since yesterday. Can’t restart the game. No more update required (5.4.1). I can't contact support for obvious reasons