I bought a Roku Premiere for my TV and one for my roommates tv. 2 total Roku Premieres on 2 different TV's. I already started my monthly plan . I started with the $10/month one . My question is once I hook up the other Roku Premiere to a different tv (same house) does my monthly payments cover both units ? Or do u have to make 2 accounts /2 payments..? One for each Roku.. ?