Thank you, Kash. Unfortunately, there seems to be no way to contact the Film Noir Network. It doesn't have a website. It has a Facebook page, but I am not on Facebook. The Roku website doesn't have any information for directly contacting the FNN.
After less than one week as a subscriber to FNN, I am increasingly disappointed by it. Hardly any of its offerings are captioned. Moreover, some of the movies that it offers, such as Hook Line and Sinker, are "unavailable at this time".