Only way to make it work is to change the capacity in the settings, just slightly, and it will update the indicator.
But it will bug again as soon as you close and reopen the app.
Happens to me too. It did work a few months ago without issues though… Which is strange, I doubt the app updated itself since I didn’t get it from google play, so really no idea what caused it not to work.
Yea the percentage indicator is wonky, cant get it to work consistently here either. I’ve also noticed when you try to check the app while charging, it will ask for your password repeatedly and wont let you in sometimes.