Extra customization may be required for custom theme
Progress bar and Drag & Drop functionality has been tested in modern desktop browsers such as Chrome, Firefox, Safari, & IE10. It may not work in older versions of IE or certain mobile browser.
What customers say about Customer Order Product Upload
It didn't work in my store because it's interfering with another extension. The support has a lack of communication and you need to beg for a response if you buy anything from this developer, apparently, he has no time for his OpenCart extensions business. He took one week to respond to my questions and another week after I needed some help after buying it.