Hi, I have an iPhone 11 Pro Max running iOS 13.3 but was also having this problem on my iPhone 6s and 7 running iOS 12.4 and 13.1.
I’m able to download the app from IosGods App and install it perfectly fine, The game even Opens and loads and I’m able to go into every menu and different arenas, and pvp, and deck builder, and it even shows all cards having a base energy of 0. But Whenever I try to start actually playing, either single player adventure or pvp mode it goes to the loading screen and gets to 100% and right when it would normally load the match and start it just crashes and closes the app. It does this every time and I’ve tried re downloading and turning off iCloud Drive in settings, but I can’t seem to get it fixed.