Rating: 5 stars

I was using a different external images to thumbnails plugin, and it stopped working when I switched to apostrophe theme and installed jetpack.

This plugin works for me.

Rating: 5 stars

Works very well and with some other slide plugins too.
With PHP 5.3.27 version, only first image of the post as thumbnail will work. With external custom URL will not work with this PHP version.
I upgraded to PHP 5.5.27 and problem solved.
Developer very helpful to solve problems.
Thank you!