Page 2 blank

I downloaded the sandbox app for my foodie theme. Blog here: http://lemonsqueezyhome.com

I finally got the next page to work and initially the posts were showing up, however there were no images at the top as on the first page. So I fixed one of the posts and created a feature image. That post disappeared from the list.

So I deleted the plugin and downloaded it again. Now when I click on next page, it is blank. Not sure what went wrong. At least before the posts would show, now there is nothing.

I did check the boxes on the “Work with Pagination” and “Show Page Navigation” boxes checked.

I don’t want to mess with the code if I don’t have to, but if someone is able to walk me through each step I could do it. I just really messed up my blog yesterday trying to work with code and I’m afraid to doing it again. New to wordpress–blogged with blogger for 4 years. Thanks!