I only run into this when I have an unstable data signal on my phone, where my connection strength is fluctuating or i’m walking around and lose the signal entirely. the app will start to load, initialize for a while, and then sometimes go to a slightly different login screen that wont let me log in. I’m not sure how you checked before, but maybe try another area/network/hotspot whatever and see if you run into the same thing, if it works better there it kind of points back to it being a local connection issue.