Based on @maxelman “Tern GSD Transporteur Rack Hooks for Woom Bikes” (https://www.printables.com/de/model/459196-tern-gsd-transporteur-rack-hooks-for-woom-bikes)
I shorten one of the hooks,
so on cargo bikes with a lower front the wheel the kid bike / Woom is not touching the ground.
See pictures - it work out fine.
I printed with Bambulab PLA Tough for strength.
In addition set print parameter for:
Any comments or suggestions regarding this design are appreciated.