Blurry images Woocommerce

Hello,

All my product images are 546 by 624 pixels and are shown blurry on my website.

These are the Woocommerce -> Customize -> Product images settings I have:
https://pasteboard.co/Jy2vQB0.jpg

This is the information shown on the ‘thumbnail regenaration:
”
Thumbnail Sizes
These are all of the thumbnail sizes that are currently registered:

thumbnail: 280×280 pixels (cropped to fit)
medium: 624×546 pixels (proportionally resized to fit inside dimensions)
medium_large: 768×0 pixels (proportionally resized to fit inside dimensions)
large: 1400×800 pixels (proportionally resized to fit inside dimensions)
1536×1536: 1536×1536 pixels (proportionally resized to fit inside dimensions)
2048×2048: 2048×2048 pixels (proportionally resized to fit inside dimensions)
woocommerce_thumbnail: 300×0 pixels (proportionally resized to fit inside dimensions)
woocommerce_single: 600×0 pixels (proportionally resized to fit inside dimensions)
woocommerce_gallery_thumbnail: 100×100 pixels (cropped to fit)
shop_catalog: 300×0 pixels (proportionally resized to fit inside dimensions)
shop_single: 600×0 pixels (proportionally resized to fit inside dimensions)
shop_thumbnail: 100×100 pixels (cropped to fit)
”

As you can see for example shop_catalog and shop_single show 600 and 300 x ‘zero’.
But there are no settings were I can change this?

Thank you for supporting!