on my iPhone connected with bluetooth I can ride perfectly and zwift controlls perfectly the resistance on the MyCycling Technogym. If I zwift on my Windows PC and xonnect the trainer through Mobile Link everything works perfectly but zwift is not controlling the resistance any more.
When you’re pairing, are you pairing your trainer as a “Controllable Trainer”? That’s the section in the lower right portion of the pairing screen. While Power Source tells Zwift about your current physical effort, it is the Controllable Trainer option that allows Zwift the ability to tell your trainer how to set its resistance. You’ll need to pair both to get the best use of your trainer.
If this doesn’t help, be sure to submit a ticket, and we’ll be sure to help you out.