App stopped working

Anyone know how to fix this?

The Pecron app which had been working fine for months suddenly stopped working. Instead of showing me the 2 pecron units (which are connected with a dual voltage box) as soon as I open the app, its presenting me with a logon screen and all the fields are disabled!

I'm in the middle of an outage right now and running my housse off the Pecrons. I want to be able to see the battery levels on my phone but can't.