If you can return the bike I would do that. I wen to their website and the first thing I saw was "as seen on TV" and that is a good sign run don't walk away from it.

You could upgrade the rear mech as people have suggested but I would look for a bike that is already set up properly with a decent rear mech you will find it to be of more quality and reliability in the overall bike. If you are buying a bike and it has the bottom end of anyone's range and is not a really known quantity at a shop you will potentially run into other issues. Tern, Brompton, Dahon...all make some decent folding bikes. They may cost more but they have excellent support behind them and quality (at least on the Tern end and I believe Brompton as well I haven't worked at a Dahon dealer but Tern is ex-family of David Hon their founder).