Pinterest images low quality

When pinning an image with the sharify pinterest button, it seems to be using a low resolution photo. This doesn’t seem to be happening with the Facebook share, as that is taking the full 960 x 6664 resolution photo that is used in my feature images. Anything i can do to fix this?

I’ve replaced this with other Pin it button plug ins, and they all seem to be pulling the correct resolution. I’d just really like to use sharify for all social sharing to keep consistent.

https://wordpress.org/plugins/sharify/