Your customers can also upload the image through the social media once you have enabled the Social Media Upload feature from the backend. Here is how they can do it.
Frontend
By clicking on the Variant with Image caption, your customers will get the “Image” tab.
By clicking on that tab, you will get the Social Media Icons.
By clicking on the icon your customers have to insert the login details.
Once they connect to the Instagram account, they can upload the images from the account.