[theme: [pinboard] Pages don't display properly

I need some help please,

for some reason the pages on my blog do not display the whole content, only the feature image and a few lines from the beginning of the page. I use the latest version of the Pinboard theme (updated version this morning)and this is my first time self hosting.

http://www.diaryofaserialexpat.com/

I know close to nothing about CSS and php and all so please could you have a look and let me know whay i can do in total layman’s word as in WordPress for dummies kinda thing lol

Thank you very much