Send your store url.
Send your store password
I cant see image upload option on any product page. where you have added?
send me product page url.
Its working fine, i can see image passing to cart page,
if you want to show preview of uploaded manege then i have to do Js code for product page and for cart page need to do code in liquid, Pm me if want . cant send you code for that its depend on theme code.