Hi, we may be able to advise about what you are doing wrong if you tell us what you are doing .
Try to describe your configuration and connection process step by step.
Alternatively, search the "How to" section of the forum for setup info on the Comcast, there are some posts with rather detailed instructions.
Good luck, and of course you are very welcome to come back with specific questions!
Update to my previous post.
- The thread on the Comfast is actually NOT in the HowTo section, but it's sticky in the general discussion section; sorry for mixing that up. And I see that you already posted there...
- Ravell's post with his video is right next to your old post: Breeze Range Extender