Note: If your domain is behind Cloudflare it will not work since CloudFlare blocks port 8090.
If you want to access Plexa Panel on SSL you can do so by issuing Lets Encrypt SSL for hostname, before continuing further make sure you have created website with a domain you want to access Plexa Panel as.
If you want to access Plexa Panel on: https://panel.yourdomain.com:8090 , create an account with domain panel.yourdomain.com
. While creating an account you can either check SSL or not, it is optional.
If domain still does not point to the server, again a self-signed SSL will be issued.
Setup SSL
Main > SSL > Hostname SSL
Select domain on which you want to access Plexa Panel. Once issued, you can visit Plexa Panel on https://yourdomain.com.
Note: If you also want to host websites on this domain, you can do so by simply using FTP or File manager, this operation will not affect that.