Thank you for using our online answers forum. Sorry to hear you are having issues getting connected to your Slingbox on Watch.Slingbox.com. It's hard to say what the exact culprit could be without some more information. Does your Slingbox have a solid network and power light? Have you tried doing a factory reset on your Slingbox and going through the setup again? Is your Slingbox hardwired to your router?
Here are a few links to help troubleshoot your issue further.
Let me know if these help, or if you have any other questions or concerns.
The Sling Moderation Team