Never mind, I fixed the problem. Apparently the data path gets hardcoded in: steamapps\common\Divinity Engine 2\Config.xml, I had to manually edit the file, changing the path in the tool itself doesn't work.
I bought the game at the end of December. I do not have access to the Divinity Editor 2 on Steam. According to what I could read on forum, that problem was solved ?
I tried the Console solution but after I have downloaded and copy/past in data I can still not start the editor.
The problem is urgent. There is no Divinity Engine data DLC in the Steam. I can not run the Engine. I downloaded the game and the engine on 13/11/2021.