FTP file path problem

[nrae]

I have just started to use ATOM today as an Html Editor on my iMAC (Big Sur) and need a way to upload files to the server as when I try to do this the following file path appears:

[16:20:00] Upload: /Volumes/Seagate Copy 5TB/HITACHI/WEBSITES/WEBSITES CURRENT/Nicola *** 2021/index.html to /WEBSITES/WEBSITES CURRENT/Nicola *** 2021/index.html ... Complete (268ms)

As you can see it is reproducing the folder path from my local computer rather than that of the remote server. What the path should read is as follows:

[16:20:00] Upload: /Volumes/Seagate Copy 5TB/HITACHI/WEBSITES/WEBSITES CURRENT/Nicola *** 2021/index.html to /index.html ... Complete (268ms)

Do you have any advice? My partner has successfully done this with the same settings but on his PC but not on my Mac.

Best wishes, Nicola