I have a Kickr Snap which I usually pair via Ant+ to my laptop without issue.
Recently I have started using Ipad instead of the laptop which is too old and slow and have a problem with ERG not working in workout mode.
As I progress through a workout there is no resistance change in the trainer and the actual wattage remains the same. The strange thing is that the workout mode seems to think I am hitting the target wattage because I get the yellow star at the end of the segment.
I have managed to solve the issue occasionally by switching everything off, restarting Zwift, reconnecting all devices and then starting the workout again, but this is tedious and doesn’t work every time.
My Wahoo Tickr and Wahoo Cadence sensors are both pairing fine and displaying true values so it appears to be an issue between the trainer and the Ipad.