@Tonton83
If you have a RaspberryPi with a Linux derivate OS (Debian, Raspbian, Ubuntu etc.) or a more sophisticated QNAP or Synology NAS server with a possibility to create a VM (virtual machine) or even WSL (Windows Subsystem for Linux) on a Windows 10/11 computer, you can install FOSHKplugin, an information broker software specialized on receiving,
distributing, converting etc. the data posted by a modern FineOffset/Ecowitt (clone) console.
It needs to run 24/7 though.
You can send/post the customized server data from your console to FOSHKplugin and FOSHKplugin can convert you data to the windy format. You can have up to 100 different targets where you can post to, converted or unconverted, with certain data added or not

have a look at http://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#foshkplugin