When I first developed the Regina Cleri Seminary Alumni website, my phone (Samsung Note 9) would not let me sign into the website as an administrator, the website would freeze every time I tried. Meanwhile, my desktop computer was working just fine. I called the technical representative for my web host, did some troubleshooting, and viola, we found the problem. I had to switch from the default Samsung web browser on my phone to the Chrome browser. Now it works perfectly...!!!
I've seen similar problems with laptops and desktops. Some internet browsers are just heavy and cumbersome. They'll work fine on some sites but not others.