This blueprint, and the other one I referenced, is specific to Zigbee Home Automation (ZHA) and doesn’t support Zigbee 2 MQTT.
Unless you decide to switch to ZHA, I’m afraid you won’t be able to use it. I’m glad we at least figured out what the issue was!
I did make a blueprint for controlling this dial using Z2M back in 2023, but I’m not sure if that blueprint still works and I’m not currently supporting it because I’ve moved to ZHA. If you’re interested in looking at it, it’s here, but if you find issues I don’t think I’ll be able to help.