It sounds like you have not set your url in config.json
That fixed it! Thanks!
This morning I conducted a test registration to see what the user experience might be like. Note that I am using the registration queue.
I completed the test registration with a unique username and an alternate email address that I own.
My primary concern here is that I would feel totally in the dark about what happened to my attempt to register until the registration was eventually approved. There is no indication anywhere during the application process that I would have to wait for approval nor any indication of how long that might take.
https://github.com/NodeBB/NodeBB/issues/9772 There was a bug that was causing the messaging to now show up when someone was added to the queue. Thanks for reporting.