Here's the reply:
Thank you for your email.
The site was temporarily down earlier today, however, we believe the issue has been resolved and fixed and the site is back up and working. We apologise for any inconvenience. If you are still experiencing difficulties with this issue, please let us know by replying to this message and giving the specific details of the error you are encountering. If not, we hope that you will continue to enjoy Ancestry without any difficulties.
I still maintain a message on the homepage would have been good service, but never mind.