It seems you are trying to reconfigure a new remote. Here is a support link that may help:
Hope this helps!
Sling Media Moderation Team
I Have a Slingbox Solo that works fine, but I need to update the remote from the old Comcast version to the one for Xfinity. I seem to be unable to do so with either my Windows PC or my iPad. I have followed instructions, but every time I try to reconfigure sources or TV service, I get broken web pages. I have tried both Internet Explorer 11 and Chrome with the same issue. Trying to setup a new slingbox also leads to a broken web page. I don't want to delete the current setup because it is working, even though it is a pain to navigate using the wrong remote. Anyone else having this problem and found a solution?