I was having trouble changing the web image that WD was uploading to Twitter. Changed everything that I thought needed changing in WD but changes never took hold.
From the WD Forum I learned that there are ftp specific entries in a reg file. The one I needed, “wdisplayftp” was a hidden file in the data backup folder. It looks like this file stores the ftp connections made by WD (????). I made changes for the Twitter upload section and all worked.
You could look in this file to find your specific upload configuration, make the changes (make sure WD is closed when editing the file) and then execute the file. This was a mistake I made (once), not executing the reg file ☹.
Also, this is a bit out of my comfort area so apologies if I have mangled the description.