Unsuccessful sync and download is taking up space on my mac - how do I delete these hidden files?

[sophiepajak123]

Hi all

I have been trying to sync and download a large file (approx 160Gb) from a client for 4 days now and hitting numerous roadblocks. Before my most recent attempt, I had a total of 240Gb available space on my laptop (of an overall hard drive size of 400ish), but now, after the unsuccessful sync, I only have 100Gb available. I assume this is because the unsuccessful attempt is still taking up space on my hard drive in the form of caches etc, but I can't find out how to delete this and regain the storage space back. I'm desperate to attempt the sync and download again but can't without freeing up this space so I'm back up to 240Gb. If anyone can advise me how to delete these hidden files that would be amazing - thank you! I am using a Mac. 

Thank you! 

[sophiepajak123]

Just to elaborate on this - I have followed these steps suggested here - https://help.dropbox.com/delete-restore/cache-folder - and when I did this a few days ago I could see lots of large files there I then deleted, but this time when I try it only shows cache files amounting to 55ish Mb, so not the 140Gb that I'm looking for (as I had 240Gb before I started the sync/download process yesterday.) Thank you!