Having problems with DNS setup

Hi and apologize for what it probably a pretty easy question for most, but tbh I’m completely lost with, I’ve read the tutorial on how to link my droplet to domain name, but still not sure what I have to do to get it to work.

I’m currently running Nodebb, my domain name is setup (wikievolved.org) and pointing to the three DO nameservers, I’ve also added the domain in the control panel and setup the A name, but still browsing to the url gives an “unable to connect” message.

I spoke to a guy from Nodebb who said “you just need to set up nginx to proxy requests on port 80 to 4567” which means nothing to me, so I’ve been searching on Google for an answer, with nothing that helps.

Some pointers would be appreciated,

Best, Lee :)