In the pairing screen you showed I am seeing the trainer paired as the speed sensor, and the speed sensor paired as the cadence. If the Bontrager Interchange 238 is your speed sensor it should be paired as the speed sensor.
I went through the pairing you sensor help video on Zwift’s Youtube.
And it does the same thing there as it’s doing for me…
Under the Speed Sensor; it’s showing “Booster” and the Booster is his “classic trainer” and the Speed Sensor is the Bryton which he selects and that shows up under his Cadence Sensor.
Only thing that is different is that he has a Heart Rate Monitor as well paired. I have a new battery in it as well. The magnets on the cadence band & speed wheel sensor seem to communicating with the Bluetooth receiver.
My Bontrager Interchange Digital Combo Sensor does flicker “green” which indicates it’s paired.
But my Rider/Wattage still will not appear on either the iOS app or the Macbook Air Game.