Mobicip's filtering policy is based on filtering settings used by US K-12 schools. While this is very effective most of the time, many users have specific websites that they would like to be allowed or blocked.
For instance, the site you are trying to access may be classified as an online gaming site, which is blocked for the Strict level. By purchasing a Mobicip.com Premium subscription your account owner can configure the filtering to suit your specific requirements. The account owner could add the website to your whitelist, and the site will be allowed.