Any suggestions?
Yes, at least one:
Would you mind being more explicit in both topic title and content?
Title as generic as "it doesn't work" will not attract forum members thus you will not get support.
Then reading your post, I don't understand what the issue is except that it has something to do, apparently, with IP address.
I found the issue mentioned in 2011, but nothing more recent, so here is a new thread. I am on Zentyal 3.0.20 fresh full install. All modules up to date.
Which one issue ? what are speaking about ?
I registered for the Zentyal Server Account
Do you mean you authenticated against Zentyal or something else ? Windows account ? LDAP ? or is rather DHCP stuff ?
and was issued with a xxx.zentyal.me address, but that address does not point to my server, or anywhere else as far as I can tell. Ping to xxx.zentyal.me results in "unknown host"
1 - xxx.zentyal.me is by no mean an address but fqdn (Fully Qualified Domain Name)
2 - this "name" can't "point" to your server if this is your client's name isn't it?
3 - Ping apparent issue doesn't mean "it doesn't work" but may reflect DNS issue only
or... this is something totally different: you describe Zentyal server issue. Then I don't know what "registration" means and suggest, again, that you make clearer explanation of what your problem is