Drivo calibration issue

[mdtompkins64]

I’ve had a Drivo for a year. I did a calibration for the first time and the resistance on the unit went up quite a bit. Tried calibration again and again. Now the resistance is almost non existent and ERG mode in Zwift doesn’t work. Usually you can hear the servo adjusting the resistance to hit the power targets and the unit is silent and the resistance doesn’t change. Same when riding in Zwift, no resistance change with the gradient changes. Seems the calibration messed everything up. I have the unit connected to Zwift using the ANT-FEC as directed in the manua. Any suggestions?