A week or so ago I lost Nest camera image - "camera is offline" message. I confirmed it is not a power issue so must be a connection issue. As of yesterday now cannot log into Nest app so cannot access camera or thermostats. I have upgraded iPhone 11 pro IOS to latest update. Rebooted wifi modem and router. Deleted and reinstalled Nest app. No success. My wifes phone still works and she can see thermostats but she also gets the "camera is offline" message.
mlverm, thanks for keeping us in the loop and for sharing what you've done to have your concern resolved.
@Barb4, could you ensure that VPN is also turned off on your mobile device is you have one? Let me know if the issue persists.