I apologize for my late response and thank you for all of your patience while waiting for a reply. I definitely understand how frustrating your situation must be, and I wanted to make sure that your concern was acknowledged. Do you still need help with this issue? I know that there's been a delay in response since you posted.
I still have this issue. The “lost” camera cannot be re-added to my home network even after multiple factory reset to the camera. If I set up new home and set up this camera there, then this camera works just fine. I think I need to uninstall everything, all cameras, and reinstall them. I just didn’t want to risk losing my existing set up with other working cameras.
Is your other camera connected to a different account? That could be why it is not adding back to your Home. I would suggest that you contact Support so they can try and check on that for you. I do not have the option here in the Community Forums.
this camera has never been installed on another “home”. I onced created a new test home to see if this camera still works and it was installed just fine on the test home. When I removed this camera from my test home, factory test, and try to install it on my main home, it wouldn’t let me add this camera back.
I suspect my hub max camera is the culprit for this bug. There’re a lot of bugs in using cameras that use Nest and cameras that use GH under GH app.
I would try to turn off your Hub Max and then try again to load what you need to on the Camera, and see if you run into the issue again. Factory Reset is always a decent idea too if you are not getting what you need from the cam.