Hello, unfortunately since some time after one of the latest updates Hearthstone crashes on the iPad Air 1 and iPad Air 2, and rebooting the device & killing all other apps in memory does not help. Crash occurs at the stage when the main menu is loaded, immediately after that. Please fix this problem, thank you.
P.S. On iPad Air 1 there is the latest version of iOS 12 installed, on iPad Air 2 the latest version of iOS 13.