no post found after clicking title

Hello,

I have two problems and maybe they are related. on my blog http://www.devotetees.com/blog when i click on a title of a post it goes to a page saying “no posts found, try a different search?” and i thouught the link should just go to a full page? if i need to add a page, please tell me how.

and i cannot seem to get a valid feed from this page. my webhost says its http://www.devoteTEES.com/blog?feed=rss2 But feedburner says it is invalid.

Thanks for any instructions