DSMR - sensors not showing up

Hi, I am relatively new to home assistant but have setup a few platforms successfully. I struggle however with DSMR (smart meter component). I included the code as instructed in the configuration.yaml file; no sensors are generated by HA however, let alone data.

I checked if my meter is sending telegrams through CU, this is the case.

meter%20readings

My metre is an ISKRA AM550 - ESMR 5.0.

Hopefully someone experienced the same issue and can help out - many thanks in advance!