Not sure if this will do it, but I was just having similar issues with my TimeFactor. The tap tempo lights would blink in sync with my tap pedal (via MIDI cc commands on my floor controller), but the tempo would not change.  Found out that my MIDI Clock setting on the pedal was turned on, which trumped any tap tempo control for me.  I went into the settings under MIDI CLK and turned it off, now my tap tempo works great.  Hope this helps