DynDNS Server URL changed?

I have had a custom DynDNS domain setup for a while now and have just noticed that the server the Astaro uses (members.dyndns.org) is returning a 404? Also, Astaro shows the entry on the dynamic DNS config page as "DynDNS status is: An update attempt is in progress.". But the IP in my DynDNS account is not updating to my new WAN address.

Just thought I should mention this as the DynDNS config in Astaro may need updating.

I have ASG v8.300 installed.