The add-on is limited to 4.1.0 until they release a new version.
What add-on do you mean?
I'm using HA docker version and the Z-Way (actual 4.12) integration since a long time (after was published) - but in this time only for Z-Wave devices...
About the HAOS add-on didn't know...
Try at Raspberry console: dmesg| grep tty there should be something like that: [ 11.835361] usb 1-1.4: cp210x converter now attached to ttyUSB0 [ 11.844992] usb 1-1.4: cp210x converter now attached to ttyUSB1 Have you something else connected at USB ports? And - what is your Z-Way version?
I made a pull request today for LocalWeather app with added temperature, humidity and wind speed/direction sensors (can be selected).
This can be used in future in automation.
Additional you can select the refresh interval then.
If you have some time you can wait while update is available.
Yes, you are right of course - I haven't seen that this element is a widget with multiple device values... One simple way could be to create a new HTTP-device and configure it like this: weather_device.jpg Use here the device name of your weather device and your z-way-IP - and insert the Javascript ...
Right.
I would take a Z-UnoG2 and this sensor and make it myself. It is really not hard to do.
The "hardest" work is to find/make/print a case for the sensor