Featured Image improperly croping width. PLEASE HELP

Hey Guys,

I’m new to wordpress and Im trying to figure out why when i post an image it crops it for width even if i ask ti to crop for length.
The php I’m using is
add_image_size( ‘neptune-thumbnail’, 250, 9999, true);

The link is:
Lose 30 pounds in 30 days article