Capped Legends Event : Chapter 1 with bugs

It's ridiculous how buggy this game is. After completing the first training session in the event, I can't do any more. It freezes and won't let me select the remaining training sessions in the International Legends event. I've tried everything but nothing works to fix this, and I'm already on the 3rd day with this problem, which hinders my progress in the game.

It's ridiculous and frustrating to have these problems and no one is fixing the

m.