I am using WordPress 4.9.8 and WooCommerce 3.4.6 and Feed Them Gallery PRemium for bulk upload to sell photos.
My problem is when a customer buy a photos, it works fine, but on the order-re ceived page the name showed for the url of the photo, is somethign like

https://instantmax.net/wp-content/uploads/2018/10/tennis03.jpg

which is just impossible!
Any customer can then found any photo.
How can I hide that url?

Any help much appreciate.
Thanks!