Works for me. I would suggest trying again to confirm if it wasn't a temporary issue.
When I check it shows this version is still current.
I ran into a similar issue and found that while my DNS was set on the VM settings, the Alert Central appliance was still using different DNS settings. I could ping out to the internet, but only when using the IP address. Initially I had overlooked the "To manage this applicance..." message shown in the below screenshot where the DNS servers are setup. Hope this helps.