I live in central florida using brighthouse networks as my tv provider. I have a roamio plus with a card and tuner attached. I get all the first 100 channels perfectly but most the channels about 100 tell me I'm not authorized for that channel. I get a few local HD channels but thats about it. I just picked up the tuner add-on about two days ago from the cable company. I didn't know I needed one until then. Is there anything special I need to do after I hook it up to get it to work? I'm not even sure what channels the tuner is expected to pick up. I just know that I'm getting very few channels about 100. Its like I'm only getting the basic channels from brighthouse. I don't have any other cable boxes in my house. Do they only give out the basic channels if you don't rent one of their boxes? Trying to figure this out so I can get the other HD channels that are not tuning in on my roamio. Any suggestions would be appreciated. I have not called the cable company yet because I'm not sure what to ask them.