How to download my code

Hi – we have been abandoned by our developer and are stuck with digitalocean which is clearly an environment for techies – we’re not AT ALL. We want to access and download our code and have spent a couple of hours going round in circles trying to figure out things like SSH Keys and setting up consoles. At each step we hit a brick wall where an instruction requires technical knowledge and may as well have been in written in Klingon. Is there anyone out there who tells us how to access the code on our droplet? We have apple macs and we have filezilla installed. We’re super familiar with accessing servers via SFTP using and FTP client and the regular hostname / un / pwrd route but digitalocean is a whole new world full of wonder and bafflement! Please help. Thanks Martin