Restored trashed blog 'page', now previously published blog 'posts' not viewable

Hi all, please help this is incredibly urgent!

Here is the site: http://www.cweic.org/

To get straight to it:

1. I accidentally moved the blog ‘page’ (seen across the top) to the trash, realised my error, and restored it again.

2. When clicking on the blog page, none of the previous 43 published ‘posts’ are show underneath the blog page – as you can see it’s empty!

3. That’s essentially it. The previous blog posts simply don’t display under the blog page. Without manually entering all the posts again and probably resetting the publish dates, how do I restore it so that all the posts display under the blog page?

4. If you go to ‘home’ and look to the right at ‘news’, that is the latest blog post. All new posts are only seen there. What has happened?

http://www.cweic.org/?s= gives you an idea of what it should look like.

Is it something to do with the fact all the permalinks of the published posts are cweic.org/TITLEOFPOST rather than cweic.org/blog/TITLEOFPOST?

I would appreciate any thoughts or help.

Thanks,
Alex