I am sorry to hear that you are having issues connecting with your SlingCatcher. Fortunately, we have an article on our support page that covers all troubleshooting for the SlingCatcher :
The portion of this article to which you will want to pay special attention is listed under "Unable to connect to Slingbox from SlingCatcher". I recommend following the steps outlined in that article to get connected.
Happy to assist,
The Sling Moderation Team