First of all, make sure to install Webuzo v3 on your CentOS/Ubuntu server. If you haven't installed it yet, follow the KB topic:
Once you've installed the Webuzo v3 control panel, login to the server with https://IP_Address:2005/ with root credentials. Now, install SSL on the hostname of the web server, and read the KB topic:
Now, go to the panel's index/main webpage.
If you wish to keep the data of your website safe, we highly recommend to setup a backup destination and scheduling it for automatic backup generation and upload process itself. (optional, if you don't have any backup drive/destination you can contact us, we do offer backup service ~ paid service).