In this short and to the point video I am going to walk you through the process of renewing a Let's Encrypt SSL certificate on a Bitnami Stack.
You would do this for all your domains once you find out the main domain. You are then given a acme challenge for which you have to add a TXT record on your server.
Once we add the TXT record I will then show you how to validate and make sure the record has propagated using the MX tool.
Finally we will restart the services and make sure the certificate is updated on the website.