Cycleops H2 - Zwift calibration issues

Whether I initiate a warm or cold calibration, I increase the speed to the required 37 KPH before allowing the trainer to spin down to 0 KPH however the trainer/program will not go below 3 KPH and then the calibration continually fails. Is this a known bug and how to proceed/calibrate?

Hey Chris
I just figured this out myself this morning. Exact same thing happened to me on my first attempt to calibrate my new H2.
This is a known issue and Zwift suggests if you want to calibrate use Rouvy.
Zwift is trying to figure it out and posted this issue in Oct.
Hope that helps