Blurry Shop Thumbnail Size

Hi there,

I’ve been researching about this but I cannot find the way of fixing it.
My shop images are being displayed blurry from last woocommerce update.

I go to the customizer and I do the following configuration (the preview seems to be OK):
https://ibb.co/myRyQ9

But when I publish and I go to live (after the thumbnails regeneration has been complete) the result is the following (Bigger and blurry images):
https://ibb.co/bOSNk9

The thing is that my online shop in English version it’s being displayed properly:
https://www.fredmartincollection.com/en/collection/

So I’d like to find the way of displaying the shop tumbnails at 300 width as I configured it in the Theme Customizer.

If anyone could help me out would be great,

Thanks.

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