Domain Mapping not Working, Domain Name is unable to access!

Before jumping for help, i have tried to do my best is solving the issue by myself, in vein and confused seeking Expert help :slight_smile:
Below is the screenshot of error i am getting,

The domains are bought from Namecheap, and the website itself is hosted on Hostgator.
I have added the required information at the hostgator, and have also have followed up with the due deligence tasks at Cpanel end, though still same issue!
Help, Anyone :slight_smile: