Sentora should be using your server's external IP which is set during the installation process. If your IP changed since you installed Sentora this would be the problem. The easiest way of updating the IP everywhere on the server is to use the 'Auto-IP Updater' module.
Use either the Repo Browser module or the command line:
Use either the Repo Browser module or the command line:
Code:
zppy repo add zppy-repo.mach-hosting.com/repo
zppy update
zppy install autoip