I'm using NOX emulator and I managed to solve my issues by creating a second emulator operating based on Android 9 64-bit; before this it was Android 7 64-bit. Hope this can help some of you here.
Someone really needs to fix the ads system, it makes you crash at the title screen almost every time. Been trying for almost 2 hours and not once did I enter the game. It keeps playing the same Match Masters ad everytime and clearing cache does not help.
opening a chest with OOPArts with the 100x item multiplier will crash the game immediately.
if you use the x50 item multiplier instead, this will not happen. just make sure you let the game autosave and wait a few seconds before you open the next chest.
It's not exactly a multiplier, it just turns any amount of items you get from a treasure chest into 25. It's best used on treasure chests containing very little of an item, like light/shadow items or crafting materials.