@girish sweet- that worked!
I saw that's also what you said here:
https://forum.cloudron.io/topic/5457/site-is-not-reachable/7
And is basically what's described in the troubleshooting as well.
At first this was just an issue with the uninstalled containers, but then when I restarted for a cloudron update it took down the whole thing, which made me think ngnix really was broken 😛
Thank you!