Thx fot the explanation.
In the meantime i've been able to connect the airstep to my kemper player, and also to my kemper profiler powered rack.
For the player I use the Widi bud pro, for the profiler I use the Widi jack conntected to the profiler.
It both works with the settings that are baked in the airstep app for KPA.
Either way, thanks for the tutorial.