As you can see in the client area, it can take up to 72 hours for new domain names to start working everywhere.
If 72 hours haven’t passed yet, just have patience. Especially if it’s less than 24 hours ago, it’s very likely that your website doesn’t work yet for many people.
So please just have patience. 99.99% of the time it’s just DNS caching, and it will resolve itself automatically. No need to worry at this point.
That’s because your domain name doesn’t have a CNAME record. You should look for an A record instead.