Make Website for Free w/o Coding

User: I built a page for my site and uploaded it to my domain: it worked perfectly.

Later I used the same project in Mobirise Free Website Creator to transform the page into a site but, once loaded on my domain, nothing worked: some images are missing, the menu is not clearly visible, the formatting is completely busted.

The html files exported to my HD work correctly, the problem is only once loaded via ftp

can you tell me what can I check to resolve the problem?