Similar Problem, unplugging mine hasn’t seemed to help.
My Tacx Neo 2T trainer has been “locking up” in the middle of my rides-seems to be associated with when I am sprinting or pushing higher power but can happen at any time. When it happens the pedals immediately stop and the resistance is so high i cannot turn them at all. If plugged in, I need to dismount and unplug in order for it to return to a normal resistance again. If not plugged in, the “locking” typically persists for around 1-2sec before resetting and allowing me to pedal again. Very disruptive in group Zwift rides and I am scared to fully sprint or push high power because it is occurring so frequently.
I have already updated the firmware and uninstalled/reinstalled the tax utility app several times. I am currently using firmware version 0.0.34