I got it to work nicely in my project

I’m not at my computer but I can say:

start url has to be empty if you don’t want weird behaviour (I reckon there’s a slash by default, it should be removed) I don’t remember the next property but name but place de full url in there exported files have to be placed in a subfolder called cache on the server, but don’t include /cache in the url.

Here it works smoothly