Are you certain you enabled FTP on the Mac and that the directory structure of it places you before the users folder?
That certainly is not how it would be by default in OSX. What you have listed is the file path to the root folder, which means it is totally un-necessary
If you want the scans to go to the folder inside the Users folder that applies to your login , then you don't need anything in the path at all, but if you were to put a folder in your usernames personal folder called scans or similar, than that is what you would put into the path (just scans or possibly /scans)
(I hope you are showing examples in your screenshot and not thinking that users/myname is a real directory because you saw it online somewhere)
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