Flexify: Facebook Product Feed

I had been paying for this app for over a year and it was not been working properly because I hadn't set it up properly. The instructions weren't clear and as a result, I missed steps. I have heard from others who use this app that it works well, but make sure you are setting it up correctly and follow all of the instructions. And double-check it is installed correctly! Just because you "enable" something, does not mean it doesn't require further steps.