New domain on Route 53 - Non-Existent Domain

Hello.

If you have any issues registering your domain with Route53, I recommend that you open a case with AWS Support under "Account and billing".
Inquiries under "Account and billing" can be made free of charge.
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/domain-contact-support.html

The step missed is adding name servers assigned to the hosted zone back to the Registered domain:

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/domain-name-servers-glue-records.html#domain-name-servers-glue-records-adding-changing

I wonder if it is because I got issues registering the domain (and therefore there is no name server under the registered domain). Or it is a manual step that I have to add the name servers assigned manually.