Does anyones camera actually work the first time you click on it? Mine stays loading, then i gotta close the app so it again, once in a long time itll work the first time. My cameras are like 50ft from the router
Pull the power cord on the WiFi access point and camera for 30 seconds and also restart your phone.
If the issue is still present next I would move the problem camera temporarily next to the router for testing purposes. If the problem clears up, then the 50 feet is the problem.
Also, in the App go to Account - App Settings and Clear the App Cache to see if that helps.