I have successfully integrated some Tasmota plug-in switches with Domoticz using MQTT

I have some BOFU aka Rollertrol aka Rolatrol roller blinds currently integrated using an RFXCom (Blind T0) protocol which occasionally mis-fire. I have purchased a Sonoff RF Bridge (the original version) which I have flashed with Tasmota and the Portisch firmware, which talks to my MQTT server. And now I am stuck.
By running an "rfraw 177" command in the Tasmota console I can see the raw RF data. And incoming RF traffic from other devices. And I can see the raw RF data in MQTT Explorer. But I cannot persuade this traffic to show up in the Domoticz debug log (Version: 2022.1 (build 14495)).
I have roughly followed the steps in this https://www.youtube.com/watch?v=Y4UlFjPT5do with the exception that I am running the Portisch firmware in order to decode a wider range of RF devices (like my blinds).
What steps am I missing?
Thanks!