Thank you four! Too bad it's happening to anyone, but given that it is already happening, I'm glad it's not just me in some personal vortex, so they will likely decide to fix it for everyone.
It's noteworthy that everyone reported a slightly different manifestation of the issue because everyone had slightly different stages and/or levels of cache data in place when they tried the app and tried it from slightly different angles. It kind of shows how the error propagates through the codebase in case we have to divine another thing like this in the future. Probably many apps are like this these days.
I have a new error: it says my sign on information is incorrect. That might be progress or might not be. I am able to log into the web page of my Tesla-dot-com account. Also, my stats direct from my Powerwall Gateway via my LAN continue unabated, and the Gateway web page works as before.