404 Error after installaton

[pfaffman (Jay Pfaffman)]

@Juba007

But I do not receive the email for the account creation

See Troubleshooting email on a new Discourse install

@Juba007

And on the computer with wifi I still get the 404 error.

Sounds like DNS propagation issues. According to https://dnschecker.org/#A/beatzer.de it looks like it should be resolved. You might try an incognito window on your desktop or try another browser.