Finally after a full day, found the root-cause. When adding the device (heat-pump), I had to select the 3.3 protocol and not the (newer) 3.4. Now the entity is available and can be added to a card. The only problem I still have is that the DP list seems to be different for this version of the Weau 7kw heat pump (purchased in 2023). Example “target_temperature_dp”: 2 instead of 9 as with your config.
You mention above that you where able to extract the DP codes from the API explorer. Can you give me some guidance on how and where exactly did you find the right DP entries ?
will also start to read this : LocalTuya - Using Tuya IoT Platform to obtain not only Local Keys, but also DP (data point) IDs