TR doesn’t support calibration of the Cinch system directly, I was pointed towards using the Cinch app, calibrating (zeroing), closing the Cinch app, opening TR and carrying on.
If the Cinch app won’t find the meter, just make sure nothing else is connected to the meter, head unit, TR etc, then try again. I became frustrated with this one day but TR support walked me through it. I make a habit of calibrating my meter with the Cinch app before anything else is running, calibrate then open TR.
Hope that is helpful.
Does the meter show a green light when you wake it up?