BBCode/Images not working on forum

Hi there, when attempting to post an image or anything related, the forum refuses to add the image as an image and displays it as the following:

https://gyazo.com/8ef672fef3e5fc95dd26d801abb03049

This isn't me using poor coding to clarify, the forum automatically changes it to an invalid format.

The website is here: http://house-lannister.com/ if you're interested in trying yourself.

You got it! thanks for the help pal