Did you try to actually put something in the "Source Address" in the target config ?
So in stead of 0.0.0.0 put 192.168.7.254 or whatever the IP on the MT side.

thank you ! Yes, I did

I'm using Netflow to (towards Splunk) and this just works.

is there free edition of Splunk to use?

I am trying to monitor traffic on local network interface (P2_LAN_7). PRTG probe is placed on computer running Win 10 inside this LAN - 192.168.7.221 (collector). Mikrotik IP 192.168.7.254 (sender). result on sensor "No data since startup" i have also tried the Netflow collector tester (on...

this helped me to make it work with multitple connections:

IP : IPSEC : PEERS : DEFAULT: advanced: generate policy: port strict