I've had the Hubitat mobile app installed for a long time, but never tried to access my hub until a couple days ago. After the app opened, I would click to open the Dashboard but all I would get is a loading screen, after 5 minutes I just closed the app down. I tried it again today with no luck.
The presences feature in the Mobile app seems to be working fine, just can't open the Dashboard.
Not sure if I understood correctly or not, can the app get to your dashboard when your on your home network just not when remote? Worth checking but I'd expect an error quickly if not set, go into apps->dashboards->your dashboard and scroll down to the advanced section and make sure cloud access is turned on. Also scroll up and if you have it set to "Use All Devices" you may want to turn that off and select just the devices in use on that dashboard, it can be a challenge and a pain later down the road to remember to add things there before you can add them to the dashboard but it will speed up the loading once you get it working. Also make sure your hub is on the latest update (at least 2.1.9.117) as 2.1.9.115 had an issue with loosing internet connection and not reestablishing connection (so cloud access wouldn't work) until a reboot. Also try a reboot if nothing else works. Some earlier versions wouldn't reconnect to the internet once it lost connection either until a reboot but they wouldn't generally loose connection too often.
Go to you apps list in the Hubitat GUI by clicking on apps in the left-side menu. Then click on one of the dashboard apps. If is where you have to go to add/remove devices from the dashboard.
No, that isn't it. The hub establishes a connection with the cloud servers when it starts up. That keeps the connection initiated from the hub, not the cloud.
If you want to use a cloud dashboard it does....which is what the original question is about. It would be kinda silly to try to access a cloud dashboard if your hub wasn't connected to the internet. And if it can't access the cloud, you would get a little notification in the upper right corner of the GUI.