My instance was a fresh install. You read my mind on the automatic backups. I was trying to figure out what I could remove to clear enough space for the ./launcher cleanup to work. So I went into /var/discourse/shared/standalone/backups/default and deleted a few of the old backups which cleared about 150mb of space.
I then was able to run ./launcher cleanup and that netted me back 16GB of space. I still have 24GB used up which seems like quite a lot for a forum my size.
Now my other problem is, I did a reboot on my droplet and ever since I did that, the initial 502 Gateway issue has turned into a Failed to open page issue. I still can’t get access to my Discourse, even after do a ./launcher rebuild