If your environment is sitting behind a Proxy, from 8.4.10 onwards, you can configure Proxy Settings in Altaro VM Backup.
If you're behind a Proxy, in order to access LiveChat and the Check for Updates option, you must configure this option.
You can access the option from the [Settings] menu in the top right hand corner:
Then a window will pop-up allowing you to select your Proxy Settings:
IMPORTANT: The following 3 URLs must also be added to your proxy bypass list. Meaning traffic to the following URLs should be configured to bypass your proxy: