If you're getting a blank chat window like the one in the below screenshot, this is due to backend changes and improvements.
To resolve this, follow these steps:
- Close the Altaro UI
- [V7] Browse to: %localappdata%\Altaro VM Backup
- [V8] Browse to: %localappdata%\Altaro VM Backup\User Data\Default
- Delete the Cache folder
- Open the Altaro UI and you'll now be able to use the LiveChat functionality once again
If the above doesn't solve it, ensure that *.livechatinc.com, *.livechat-static.com are allowed through your firewall. More information here.