The warranty is an insurance that you get when you purchase an SSL certificate. It is an insurance for only end user against loss of money when submitting a payment on a site secured by an SSL certificate, not warranty to the purchaser.
If a Certificate Authority fails to properly validate the information contained in a digital certificate, and turn out to be a fraudulent online credit card transaction and a user of your website loses money, in that case the certificate authority will compensate the end user. Please note: Certain certificate authorities may have slightly different of policies on warranties.
Rvssl.com is the SSL certificates distributor. Certain certificate authorities may have slightly different of policies on warranties. Which policies on warranties are subject to change without prior notice.