RSPAMD Web Interface

I, recently, added the RSPAMD plugin; as I am moving all my emails from Gsuite to my own server.
I definitely want spam filtering, but don’t want to have to manually edit config files for false positives/negatives to whitelist/blacklist emails.
I checked rspamd documentation, and it says there’s a webgGUI at http://localhost:11334.
I opened that port in my firewall, but cannot get the webgui to load. Browser just says server refused connection. (I am using http://server.tld:11334, via remote browser) I can see that the RSPAMD plugin is running, and is checking emails, via email headers.
Has anyone had any luck getting the web panel to open?