Base station + devices all randomly wiped from settings?

I have a full Simplisafe set-up in our home and set the alarm on as usual last night + turned it off in the morning.

I set the alarm again tonight before bed, but a few minutes later, got a notification that my base station had lost power and was now running on backup battery. Odd because the station was still plugged in as usual and our electricity was fine. Then I checked my Simplisafe app to see all my devices have disappeared. Not even my base station is showing up.

What is going on? I tried plugging my base station in and out, as well as a hard reset by removing the batteries, but my app still says my base station is running on batteries despite the base station or any other devices not even showing up in my device settings. And even when I try to re-add the base station to my devices, as if if I'm starting over, it says it's already registered to a home (mine obviously).