Ultra EX2 - OS 5 - Twonky Server - SONOS ... issues

I did just the upgrade to OS5 and installed Twonky server. It’s working fine with VLC, but my Sonos has some difficulties … I see my NAS (as mediaserver) in the SONOS app, I see all my tracks, but can’t add tracks to the playlist (error 701).
I also noticed in blogs that for Twonky you can enable SONOS support (via the interface) and it changes the port (from 9000 to 10243 it seems). I’ve tried it several times via the GUI, but Twonky server doesn’t listen on another port … (checked with a port scanner)
Can someone give me some advice ?

@What_is_TWONKY The Sonos feature included in Twonky is not functionally supported. WD support Sonos using SMB.

https://support-en.wd.com/app/answers/detail/a_id/30010

Hi, same issue,
I’ve activated (SMB1, SMB2,SMB3) and (NTML V1 and NTLM V2) and I’m now able to add it to sonos application.
Thanks a lot.