Hi, all, I followed this instruction to set up Letsencrypt and the server.
https://cwiki.apache.org/confluence/download/attachments/27838216/Installation%20SSL%20certificates%20and%20Coturn%20for%20OpenMeetings%205.0.0-M4%20on%20Ubuntu%2018.04.pdf?version=1&modificationDate=1587558435000&api=v2 However, this document has never mentioned how to setup Apache2 config file along with the Letsencrypt certificate. Does anyone know how? Thanks, Tom