Like the health check and warning banner in the client area say: it can take up to 72 hours for your website to be accessible everywhere.
The “DNS Resolution Error” also described this phenomenon.
Usually DNS caching issues clear up in less than 24 hours for most people, but it can take longer.
So your website not working after 24 hour is completely normal, and doesn’t indicate that anything is wrong with your account or domain name.
Just check again in a day or two and your website should work.
For more information, you can check this article (which is also what the warning in the client area links to):