I had iPhone11 and had trouble but figured it was because the phone was having issues. My photos were messing up and a few other things so I just ignored it as I was planning upgrading anyway. Well here I am with iPhone12 Pro, everything works great again EXCEPT BYC! When I open the app or change the page I get the message failure to download and a whirligig. I have to wait till I think it’s finished whirling to type or scroll but often it will pop up again often several times within just a few seconds. Typing gets interrupted and I have to start over. This is a brand new phone and I’m using safari.