Whether your data/database still exists is down to the retention policy of digitalocean or hostgator, whichever one was running the actual discourse docker container. (I presume digitalocean; hostgator looks more like the blog/website running wordpress).
If you miss a payment they typically just turn your machine off and you get a few months to catch up. If it’s past that retention period they have the right to nuke it, and if you don’t have a downloaded backup, you’re sol.