Not uploading subfolders and files

[kajan001]

I have recently installed dropbox on another pi with PiOS (Buster last version).
I get it to work but it is not uploading the files or the subdirectories. It just creates the first folder and then nothing.
If I try to run the script again I get: "skipping already existing file - DONE"
I am using the same command that I have used previously.

#!/bin/bash
/home/pi/Dropbox-Uploader/dropbox_uploader.sh -s upload /home/pi/app/subfolder/files&subfolders /

Where the files folder has a number of subfolders with files. The files & subfoldersare not uploading.
On other Pi's it seem to be working as usual.

Edit:
I copy pasted the dropbox_uploader.sh from an older version and now it seems to work. Not sure how old that one is but I am guessing around march 2021