I haven't had the problem of the page getting reset, however the Public Mobile login page can get slow at times. You have probably tried all the basic things like redownloading the app, clearing cache, etc.It would probably be beneficial to try loggi...
I just signed up with Public Mobile and I had some troubles activating my number, but it was solved by just uninstalling and redownloading the app with a restart on my phone. Have you tried this yet?