There are problems with the sense servers since it is not connected to the server, the IOS application and the web browser.
I’m trying to install a sense device and confused if I’m not installing it correctly, or if there are system issues. It would be my luck that I’d bang my head for 2 hours only to find out it wasn’t something I had done.
Just noticed it was not working on the web and checked my phone and down there too 
We’re investigating.
Everything is back up and running. Thanks for reporting, guys.