Worked for a few days, now thinks I'm someone else – sjcam zone Review

When I first got my sjcam4000 wi-fi it connected to my iPhone 6s no problem. A week later and it's telling me to log in (which I didn't have to before), so then I registered, but then it thought I was someone else (using MY email address). So I uninstalled the app and reinstalled it, now I can't get the app to do anything.
Review by WhatThe...?! on sjcam zone.