We're missing some valuable info here. I'll set out a list:
Which script are you invoking? Let us know how you're kicking this off.
Attach any config files. Make copies and redact whatever you must, but copypasta and screenshots won't do.
Under [LOGGER] in the configuration file, consider changing INFO to DEBUG and capturing the output to share here.
A general plan of what the DMRlink master is meant to accomplish (is it just reflecting all talk groups to all peers? Are there routing/bridging/other rules in play? I get the feeling based on your post that this isn't (yet) the case, but your intentions will help with debug.
I don't personally have a network of IPSC/MOTOTRBO repeaters to test against, so a lot of this troubleshooting is going to be done on paper, at least on my end.
