Atahualpa Theme Update Broken Links & Major Problems

Hi,

I apologize if I am innapropriately posting.

I dont recall upadting my theme to the newest one but a developer that looked at our site indicates we upgraded and this broke hundreds of our links. We have hundreds of 404 erros and broken pages. Our page structure alo moved specifically at the bottom of the page, we now have some information which wasnt showing up before and google adds that we didnt have their before.

Been like this for weeks also the site is really slow. Can anyone reccomend a reliable developer for the Atahualpa theme?

This is our site GreatestCollectibles.com we started it several months ago and now up to about 7,500 visitors a month but hard to update knowing many of our pages are broken and our site is slow.

Any help is greatly appreciated and i apologize if my most is inappropriate but hopefully its not.

thanks, Gisela