DG-ID 0 tx problem

[enzzo-ux]

Hello
I have configured and started dgidgateway, ysfgateway as well as mmdvm. Everything works as it should, I can listen to groups that are set statically.
However, if I try to transmit to any of these groups that are set in the dgidgateway.ini file (configuring it in the radio as TX group), the conversation is always directed to dg-id:0, regardless of what is set in the radio.
Interestingly, I noticed that if I join a conversation that is held on one of the groups that I am listening to - I can transmit on this group.
I have WPSD installed on another hotspot and a similar dgidgateway configuration and there it directs to the group set in the radio (tx dg-id)
Either I am missing something in the configuration - or I do not understand the principle of operation.
Why does it always end with dg-id=0?