If you have purchased your domain here and received a renewal notice --
Login to your client area https://merchantmoms.com/clientarea.php
Choose My Domains
then View Details buttonthen almost at the bottom of the page is the Renew Domain button
If you have purchased your domain here and received a renewal notice --
Login to your client area https://merchantmoms.com/clientarea.php
Choose My Domains
then View Details button