Need help with Docker+udpxy installed on Synology nas


Have DS218+ Synology nas + Docker + udpxy. Can see udpxy status page, some clients in it and everything looks like OK. But vlc can’t play sream with “VLC can’t open MRL

I have already contacted Synology support They answered - the problem is in the udpxy image.
Ok, I’m trying 5 different images, the situation is similar.
Ready to provide more detailed technical information.
I ask the community to help with the question.
Thank you in advance