I have created a website and deployed it in AWS Amplify. It works fine. Then I purchased a domain from goDaddy and linked it with my website.

My nameservers are all correctly copied. the domain was working very smooth after the first hour. The next day when i tried to search for my website using www.; it crashed but it was working well without www.

The day after that, it is now not even working without www.

I have checked a multiple times about the nameservers. the nameservers are all correctly copied. what else should I be checking?