I am on iOS and use something called a web app to access BYC. I have no idea what that is but one of the mods told me it was better than the app because they never update the app.What phone do you have? iOS or Android? Which browser?
If on Android, I'm going to assume Chrome: https://support.google.com/accounts/answer/32050?hl=en&co=GENIE.Platform=Android
If on iOS, I'm going to assume Safari:
https://support.apple.com/en-us/105082
I have had no issues on my PC.