Blog post now showing up

Hi Guys, This is my first wordpress site and i’ve hit an issue with showing blog posts on their pages.

https://www.saatraining.com/site/blog/ Is fine, but if you click the actual post https://www.saatraining.com/site/blog-training/return-on-investment-for-management-skills-training/ the content doesnt show up.

Any ideas anyone?
Thanks