If is download a photo to my camera roll from an email or text I cannot see it in the Sprocket app. I've tried turning off the iphone 7 or iphone 6S and I have the same issue with both. I did check to see if the printer was pared with either phone and it is.
The photo was sent to me via text to both my iPhone 7 and iPhone 6S from an iPhone 7. The original photo was taken with the iPhone and then cropped and filtered. I could not see this photo in my camera roll via the Sprocket App on either of my iPhones. I then took a photo with my iPhone 7 and cropped it and could see it in my camera roll with the Sprocket App. I also had this person send me another of her cropped photos via text and the App also picked up this photo. The original photo I could not see was a jpeg so it was a recognized photo format as indicated above. I then decided to send it to myself via email, downloaded it and then resent via email. From that email I saved to my camera roll and it was finally picked up by the Sprocket App. Not sure why this photo could not be see and there is no issues with the printer, regardless of what was originally discussed on the phone. If this happens again I will reach out to you for further diagnosis.