1) Issue with the images related to thumbnail generation. Go to Tools > Regenerate thumbnails > Regenerate all the thumbnails. Check the shop after that.
2) Issue with the customizer was related to the out-of-date version of the theme and up to date version of the XStore core plugin that you used. I have updated the theme. Check now.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.