My contacts page shows up here http://m.carterscustomsound.com/index.html
But doesn't show up here http://m.carterscustomsound.com/contact.html

Why does the contact page disappear?

It would appear that somehow you deleted it and then made duplicate pages based on the one you deleted. When you look at your RLM project does contact link show up there?

The link for the contacts page works for me over here in Indonesia on all major browsers no problem.