subdomains not resolving on the domain www.earnbig.in

I activated multisite on my website http://www.earnbig.in but the subdomain are not resolving.

Steps i followed
1) added required lines in - wp-config,php and changed .htacccess as per instructions
2) Added wildcard subdomain from the cpanel

the first subdomain i created is http://psr.earnbig.in

when i am hitting it i am getting "Page not available"

Please advise