Sorry – don’t understand. Hopefully someone else will.
I think the OP has an Eventide H9. I suspect they are using a single Tap Tempo switch, which is connected to the Expression Pedal/Aux. Switch jack. When the Tap Tempo switch is tapped, the result is not a change in tempo. My guess is the Tap Tempo switch was not assigned to Tap Tempo in H9 Control.
There is a picutre now…