I have the same issues with the V3 camera where I can see live streams but it says it is offline.
Some people were able to resolve their issues by disabling the Airtime Fairness on their WiFi router, but I do not have that on my Netgear Orbi router so I do not think that is it.
When looking at the Camera’s IP address on the Wyze App I noticed that even though the camera is working (when offline) that the IP address listed does not match the IP address in the router for that MAC address.
Not sure if the camera keeps on getting a new IP from the router via DHCP from time to time, etc…
I went ahead and assigned a static IP address on the router to all the Wyze cameras so it will always get the same IP address and power cycled all cameras.
It has been over a week and I no longer see the offline issue.
Not sure if this is an issue with the router or if it is a bug when the camera gets a new IP address from the router and it has it cached in a couple of places.
So it looks like this solves the issue or at least is a workaround.