I've had the Powerwall 2 since August 2018 and had no problems till this week (Oct 9th onwards). I have an Android phone and tablet, both have access to the Powerwall 2 via the app. Recently, when I fire up the app on my phone it works as normal but on the tablet, it asks for my E-Mail and password. No idea why. I know that the password is the STG gateway serial number (that displays on the Tesla app) and the E-Mail is the only one I have. I also added a Tesla car in July 2020 and that appeared in the same app on both devices. Now of course I cannot sign on to the tablet so cannot see either of them. I can still see them on the car side of the app and also the Powerwall 2. Any ideas please. Thanks.