Webp is not working on AMP Pages

Hi,

I’m using ShortPixel plugin on my website. It works really well for standard pages, Thanks for that!

However, it does not serve webp images on my AMP pages.

For instance:
Base: https://thepoorswiss.com/how-to-integrate-second-pillar-net-worth/
AMP: https://thepoorswiss.com/how-to-integrate-second-pillar-net-worth/amp/

The Base page is using Webp image but the AMP only uses the original jpg/png image.

I’m using the <PICTURE> technique and global processing in the options.

Is there any way to use webp images in my AMP pages?

Thanks

The page I need help with: [log in to see the link]