Forgot to read where it said to click on the actual LED on the controller.
Yes - that was my "hurdle" too -as the early FTP docs were vague regarding the actual location of the FTP Controller pairing button.
The first day I never realized the large Red LED on the FTP Controller (on the right in pic below) IS the Paring button. With the FTP DC charger removed, I kept trying to press the small round thing in the middle (see pic below) in error!
Glad to hear you got things starting to work again.