Image over in featured images

Hi. The plugin works fine for me.
This plugin added the pin button in all my images.
There is only a problem. All my blog post have a featured image and I can’t see the pint it button in this image. I don’t know the reason why.
I suppose is the same reason because it doesn’t displays at the popup
The poput is not as important as featured image.
Because featured image is the image you see of each post in the home. And then in the post page is the first image you see. And it will very nice if we include the pin it button in this image too.
Is it possible?
Thanks.

https://www.ads-software.com/plugins/pinterest-pin-it-button-for-images/