Pc wil not link with CDJ 2000 nexus

Dear all

I recently bought 2 cdj2000nxs second hand. I updated them with the latest version(V1.44). 
Now I want them to link with rekordbox on my pc with ethernet. On my pc I have the version 6.8.6 and pc runs on windows 11. But when I try to start my link setup, the link symbol wil not apear.
I turned of all the firewalls (particular and gast or public).
The cdj's give a correct link signal also for the hub.

Is there something that I forgot?

Thanks