Hi @RuudvanMunster not sure if this will become available. Guess it is easier to buy a silicon labs (silabs.com) z-wave stick and bring the button into HA with this blueprint:
ZWave-JS - Fibaro The Button (FGPB-101) v2021.12.08
I am thinking about switching from yubii to ZWave-JS with as this seems more clear to me. But I am not sure, if the motion sensor is still as finely adjustable as it is with the fibaro box
->EDIT: …you can! google was my friend…