The premium security plugin that we use has an important weight in all the work we do, although it is not the only thing we touch. After a year, the license will expire unless it is renewed, so the plugin will no longer offer the premium most interesting features, which will affect the security of the site and for this reason we strongly recommend to renew it. The annual license has a very low quota compared to the work that is being done by the security system. We consider it a very good investment, since an infection of the site would cost a lot of money and time to clean. In addition your site reputation and SEO will be damaged. However, if you decide not to renew the license, the security system will continue to be functional but with reduced protection.