All of my cameras disappear from the app if I'm not on home wifi. I first noticed this on 10/21/24. I can see and control my lights as normal whether on home wifi or away.
 

I receive movement notifications and can view the saved clip, but I can't see the cameras in the app, turn them off/on, live view, etc. unless I'm on home wifi. 
 

I have logged out and back in; uninstalled and reinstalled the app; charged all of the cameras; deleted a camera and reset to factory settings and re-added to the network. I've checked on other wifi and on cellular and if I'm not on the same wifi as the cameras, I don't see them in the app.