It is possible to accidentally connect 1 camera to another camera. If you see ZMD_SAP visible in your WiFi list, check that. You can also unplug your router to see if the light goes blue.
If the camera is on a functional network that allows it to connect to our servers, you can call support and we can try to send a reset signal. You would have to be at the location when you call.
Another thing that people have done is to take the cameras over to a different location far away from whatever network the camera happens to be connected to, which will cause it to blink green again. Then you can connect the camera to a router at that location which will cause it to forget the network that it was connected to before. Then you can bring it back to the current location, and it won’t connect to anything so you can run the setup again.