A. To delete files or folders on dropbox.com:
- Sign in to dropbox.com.
- Click "…" (ellipsis) beside the file's name.
- Click Delete.
B. To delete files or folders on the desktop app:
To remove a file from your Dropbox, drag-and-drop it somewhere out of your Dropbox folder. To delete the file, drag the file or folder to your Recycle Bin or Trash.
I hope this information helps to some extent while I remain at your disposal; should you have any further questions that is.