Just now, large cascade of tiles and the app closed, completely and had to be restarted. The tournament raid is showing as a win in my tower but on screen the battle had not completed when the app crashed.
The app is crashing two to three times per day! Most crashes happen during battles.
Using iPad Air. Older equipment but still supported.
Game name is also Sternman, I am the leader of Lobster Stew alliance.