Hi @topelovely, thanks for your update. I was looking at your site base tag and I would suggest the following setting:
Could try updating that, save changes and then re-export your site? With the base tag set, you would not use a slash before your links. All links on the page should be relative to the url specified in the base tag.
Could you try that and see if it helps ?
The other thing, if you do not use the base tag, then you would have to modify the paths to the css files and image files, those are also relative to the base tag url. I look forward to your result. Dave