Until a few days ago, I was able to access my modem router remotely via the Tether App. All good, and all fine.

For the last few days, it constantly shows as "Cloud Device (Offline)" on the My Devices page of Tether, however, I know that it is successfully connected to the internet because the internet is being used at the remote location.

Is there any reason that it is showing offline on my tether app?