HELP! I can't pair Kettler alpha run 600 ( track s8) with Zwift

Hello !

I’m struggling since yesterday: I can’t pair with bluetooth my iPhone 13 with the alpha run ( the find each other) but that’s it.
When I start the Zwift companion app, it says I don’t have any device.
I try with an old android phone, it’s exactly the same thing.
I also trieb with a MacBook Air m2 ( also BLE 5), it just doesn’t recognize the alpha run.

What do I do wrong???

thanks a lot !!!