No readings on mode "Standard"

[ellipsis]

Hi Charles,
I've just installed 2 x Denky4 (v1.3a), one to a Linky in mode "Historique", and one to a different Linky in mode "Standard". These are to replace 2 existing Micro Teleinfo units which worked fine but I wanted to move to Tasmota. The mode Historique monitor on Linky #1 works perfectly, correct and consistent.

But, the installation on the Standard mode on Linky #2 is not working. I believe the physical connection to the Linky is correct, and Wi-fi, MQTT work fine. No TIC monitoring data is being produced {}. No "SENSOR" records are generated. What am I doing wrong?
Thanks,
Tony