Description of the problem (please keep it simple and short):
App is running and linked to custom domain, when going to the custom domain nothing shows.
Explain what you were trying to do:
Yesterday I set up a repl.it Node.js app and linked it to my custom domain. It worked great, and I set it up to be always-on. From the looks of things, the app has been running correctly. However, when I checked at my domain today it says that it could not connect to the server (from any device that I tried). In Repl, the preview window shows the app and I can interact with it (with the domain at the top of the preview)
What areas or features are involved?