I suddenly started having the same problem today, with a particular Wyze V3 camera (18.104.22.168) accessed from the Wyze app (2.24.52) on two different Android devices. That particular camera (one of three) started showing as Offline in its device group. I removed it from the device group and it showed as Offline in the all-devices list. But in either case, whenever I tapped on it to show the camera by itself, it was always live-streaming properly (so it was obviously connected to my network and to Wyze’s servers).
Removing/readding the device from the group didn’t help. Force-stopping the app, clearing its cache, and restarting it didn’t help. Rebooting the router didn’t help. What did work was power-cycling the camera.
I notice this bug has been reported by many people for months. Wyze, do you have an estimate as to when you’ll fix it?