I just made a mistake and deleted the wrong device from my list. I then went to add it back in but now it tells me that "This is not a valude AutoReomote URL. Please check the URL on the other device again". I can't have entered incorrectly because I used a QR Scanner to read the code to clipboard and paste it. I also tried manually entering the code but it still comes up with the same message. How can I fix it and re-add the device?