Thanks for reaching out to us in the land of the forums. We do apologize that you have been having issues with the new router. After viewing your forum, we do see a few things that we should bring attention to. You mentioned that you are using the SlingPlayer 2.0. As we have many loyal followers out there that still use it, we do suggest that you actually go to http://watch.slingbox.com/watch/sling_player . The reason for this, is that we have not updated that player for quite some time, and the newest one does offer the latest and greatest hardware.
We have also provided a direct link that may provide you some information. This personally holds true, when a new router comes into play. Check this article out below:
How to reset your Slingbox to factory settings
Last and not least, we wanted to provide the actual System Requirements that are needed to fully operate and manage the Slingbox. Not that this may be the full cause of your issues, but it play a small part in the issue that you may be having.
What browsers and systems are supported by Watch on Slingbox.com?
Hope this tid bit of information helps!
The Slingbox Moderation Team