During the beta, I was able to create email accounts and complete the custom domain process, but hit a “TOO MANY FORWARDS” bug and thus removed the domain until the feature went live.
However, the text accounts I created still show up under Settings -> Accounts and there is no way to remove them.
Yesterday, the feature went live and I tried to go through the process again and couldn’t get past the “Add Email Address”, I kept getting the error “unable to create an email at this time. Try again later” or something like that.
What this means is I now have email address accounts visible and seemingly setup under Settings -> Accounts with no domain setup and no way to remove them from under accounts because I am unable to add any email address during the custom domain setup process.
Apple support was supportive but had no instructions, training, or manuals to even try to troubleshoot this issue but willing to work with me on it.
It seems like this was rolled out a bit too soon before the support was in place and the web interfaces not debugged very well.