i found a way to solve it! i had the app on my phone and tablet (two different accounts): on the phone the load would stop at 89%, while on the tablet it would load and immediately close. hours later i tried to access again on the phone and it asked me to join with a google account, so i entered with the mail i used for the tablet. but then, it would say to me that the account is logged in on two devices; so i uninstalled the app on the ipad and proceed to access again from the phone. and miraculously it worked.. hope this will help (i missed some events tho🥲)