1/ Please read this article https://xstore.helpscoutdocs.com/article/89-product-images
https://prnt.sc/Q5mNWncDO-OU https://prnt.sc/3bdw2MmDAnY3 , do not forget to regenerate thumbnails to apply changes.
2/ You can activate Single Product Builder via Theme Options, then you will be able to place sections and elements depending on your needs and change the width of them.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.