impossible to work with images in web direct FM13

[Stefania]

Good morning. I apologize for my english by google translate.
I created for the first time in years a db to use a browser, with FMwebdirect. Known but some flaws that I did not expect given the experience I had with FM and I do not know what to depend on.
1-not work drag and drop images, if the load by the "insert in the container" from my mac it does, from the client pretends to load and then does not display images. Even to win.
2-The first screen is made with navigation icons, perfectly visible in local, disappeared from the web version. Whether they are png or jpg.
Using FM 13 advanced, the client have server and 10 accesses
thanks for your help

ps Attaching screenshot that gives when I try to move an image from one container into a portal to a card: says "select a valid file to be uploaded"

[Stefania]

No one can help me?