@ops159 Hello, unfortunately, that doesn’t depend on us. That is the decision of the free certificate authority Let’s Encrypt?. This plugin just uses their API to generate free SSL certificates.
In fact, the lifetime of Let’s Encrypt? SSL is 90 days and they recommend renewing it every 60 days. Please check this page to know Why ninety-day lifetimes for certificates: https://letsencrypt.org/2015/11/09/why-90-days.html
FYI, the premium version of this plugin erases the difficulties of manually renewing the SSL certificate every 60 days by renewing it AUTOMATICALLY. It’ll also install the renewed SSL certificate AUTOMATICALLY if you have cPanel or root access to the server.