Spontoously crop small images right and large images wrong

I’m not sure what the heck happened but my website https://www.ManVsDate started to crop small images correctly (seen under recent posts) but started to crop featured images wrong…

for some reason no matter what i tell the size to be in the code. featured images prefer to be cropped tall but not wide.

Here is the code for the thumbnail

if ( function_exists( 'add_theme_support' ) ) {
	add_theme_support( 'post-thumbnails' );
	add_image_size( 'single-post-thumbnail', 400, 9999 );
	add_image_size( 'neptune-slider', 710, 220, true);
	add_image_size( 'neptune-thumbnail', 9999, 9999);
	add_image_size( 'neptune-minithumb', 75, 75, true );
}