[Smush Pro] Smuush and Essential Grid

Hi!
I love all the WPMU products so far and they’ve helped me increase the overall speed of my website greatly, however, it seems like Smuush has removed some images from my Essential Grid plugin and no matter what I try I cannot get them to re-show up. I have tried restoring thumbnails and also reuploading the images from the start. Any suggestions?
Thank you!
Ben.