Logo Image Problems Uploading in GridMarket Theme

Hello,

I’ve tried uploading my logo using multiple file extensions, resizing and definitely not exceeding the size allowed, but the crop icon always cuts my log even if I make my pixels or the file itself small. So I can’t upload it because it either crops it too much or it crops it too much and shows black in the back. I don’t understand…

What do I need to do?

Thanks!