Image URLs are being redirected to Home Page

I am having issues with Facebook/Google+/Twitter etc being able to pull featured images from my page’s/posts.

I think the problem is if you put the image url directly into a browser you are redirected to the home page and not the actual image.

https://fyxtrpg.com/wp-content/gallery/fyxt-rpg-misc/bonfire-night.png is redirected to https://fyxtrpg.com

Does anyone know how to fix this? I assume it is probably a little setting somewhere.

Thanks!

https://www.ads-software.com/plugins/nextgen-gallery/