Can't access Top domain using https://mysite.com/

I'm experiencing an issue accessing my top domain using 'https://mysite.com/'. It shows a 'Your connection is not secure' error and fails to load. However, accessing it with 'https://www.mysite.com/' works fine. (Using AWS amplify)

Here's what I've tried:

1. Domain is from GoDaddy, and DNS is properly set up.
2. Flushed DNS cache/Browser Cache, but no success.
3. Its been more then 48 hours and this issue is still not resolving.

Any suggestions on resolving this? Thank you in advance!