Is azam.biz an "add-on" domain, with the "primary" domain nazam.com? If so, and you had set up the add-on so that nazam.com/biz (public_html/biz/) was the target, there was no explicit redirection -- just a normal add-on. If it's not working now, that means there is some problem with LP's internal nameservers, which only support can fix. By the way, it's possible in your
.htaccess file to make the add-on show up as "
www.azam.biz" instead of "
www.nazam.com/biz/".
Do not use cPanel's "redirection" feature on subdomains or add-on domains. It doesn't work. You have to manually edit your
.htaccess file to do redirection involving subdomains and add-ons.
Please tell us what your primary domain is, what the add-on domain(s) are, and what you have in your
.htaccess file (with any sensitive information removed). Also, what are the directory names used by your add-on and subdomains?