Why does SmushPro say all pics need optimized if they already were

Hi,

I've optimized all images in the past..... at 1 point using WP Smush Pro also. Now it's showing that only 1 out of 8k images are optimized, and I'm getting penalized on Google Pagespeed for image optimization more than before Smush Pro was installed. How is that possible? The images were and are optimized