Have your tried a reboot of your NC?
Try to archive the app, sync, than unarchive the app again. That way a new copy will be installed.
Having the same trouble. Tech support is USELESS. I had to erase and deregister my Nook thereby losing all my sideloads and requiring over an hour to redownload all my B&N content. Still does not work. So I have basically wasted all afternoon both on the phone with support, downloading B&N stuff (still need to reload my sideloaded stuff), AND when I recalled support they told (after being on hold for 10 minutes) that I needed to call back because they were too busy. When I said to just cancel my Netflix then since I could not use it anyway, they said they could not and that I had to call back. Just what I want to do -- call back, wait on hold for another unknown amount of time, explain the problem to yet ANOTHER person, be put on hold for "second level support" and then probably be told to call back yet again.
I'm cancelling Netflix completely and asking for a refund. This app has not worked properly for weeks.