Now your products have size 270×270 that make it crop
https://gyazo.com/5e5a888f7092bb7b30d6d280412a91c1
Just leave this field empty to get the original size that you can change in woocommerce settings as “Catalog Images” option https://gyazo.com/3ce5f38618ecf95b77f6157a95570eb1
After changing this size don’t forget to run “Regenerate Thumbnails” (you need to have plugin to use this option)
Please, give us know if you have any other questions regarding this issue.