App needs to be fixed. Cant even open the app

Ive deleted and renown loaded this app so many times now, hoping that I can open the app and play the game. But every time I try to open the app, it wont let me even open it at all. Itll just go straight back to my home screen. Ive had the app before and then when the new update came out I couldnt play it anymore

Bully Bob Joe Fred about Pokémon GO, v1.37.2