Change from this:
[tmc-http]
enabled=1
profile_name="nng-igo-tmc-jci"
profile_version=2
udp.enabled=0
to
Spoiler: This
When you add this in sys and start nextgen, you must turn it off and on again and you will see data for Slovenia
You need to this only the first time after you change sys, after this all will work with no problem.