What does "Apologies" mean on Internet?
It might mean that the site is being updated, or that a server is down, or even that the site is overloaded (maybe a hack attack).
www.realtor.com seems to be working now.
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them