Hey Rhonda,
That is odd! I can see what you mean about it not showing on the mobile facebook site. I've noticed a few quirks like that with the mobile version of facebook. Unfortunately, facebook mobile is a whole other kettle of fish when it comes to page set-up and available information. It's pretty simplified for mobile simplicity and compatibility so it doesn't always include all your info. Until facebook changes that it will likely stay the same. I hope this helped answer your question :)
Emily S.