I have recently moved and now Hubitat Hub won't connect.
I was playing around and I ended up deregistering the hub as well.
At this point, I am not sure how to proceed. How can I add the hub back into my account, and also how to connect to the hub - its still showing blue light on.
What hub model do you have? (Check the bottom if you're not sure.) A blue light is not normal on any newer model, but such a problem would be merely coincidental with your move.
Two things I would try in no particular order are seeing if you can access the Diagnostic Tool or performing a network reset.
You'll be able to re-register the hub once you can connect to it, but it's unrelated to this problem.
When you access the DIagnostic Tool, you should perform a Soft Reset. The blue light indicates that the hub platform isn't loading, and the most common reason for that is a corrupted database. A soft reset attempts to fix database corruption.
I tried accessing the Diagnostic Tool, and it is not connecting. Tried reseting by pressing 7 seconds, but the blue light is still not going away, and its not blinking either.
Hold it for a little longer then, 10 seconds maybe. When you LET GO of the button, the LED should blink a few times, then go out, and then hub is rebooting and it will go blue again (then hopefully green). If it stays blue you need to find it on your LAN and get on the diagnostic tool.