Woocommerce shop and product images uploading strange

Hi all,

I’ve been having trouble uploading my product images to my shop. First I had trouble with the images being aligned, then I found somewhere that I had to upload them all to the same dimensions (woo commerce recommended 800×800) so I did that and now some of the images have a border looking line around them (Trolli peach O’s). Also if anyone know if there is a better way to mass upload my products without making some of them blurry and keeping the image alignment that would help a ton.

Thanks in advance!

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