Limited content library

Hi there! I’ve been having problems with images for related posts (using Jetpack) not working with Nextgen. There seems to be no solution, but as Shareaholic seemed to work when I gave it a trial yesterday, I’ve installed it again and tweaked it to my liking. The only problem I have (and it’s a big one) is that I’ve done over 180 blog posts and yet only 11 are used for the related posts. It doesn’t matter which blog post you click on, there is only a selection of those 11 images. What am I doing wrong please?

The page I need help with: [log in to see the link]