For all users: Whether you see the case or not in the shoot depends on the focal length of the particular smartphone – they are all different so some cameras may see a tiny part of the back. We have set the area to the average smartphone. If you are getting the case in the shoot then you can zoom in slightly. If you don’t wish to zoom in then you can take a shot inside the case looking through the top spy hole as you take it.
For Lightcase Pro users: If your backdrop cannot be pulled out then the solution is to dampen your finger, insert into tube and your finger will grip the paper then tighten the backdrop in it's case by rotating the sheet - it will then just slide out with your finger as this video shows: https://youtu.be/g1Bb9TVtwSs
To flatten the backdrop, lay the backdrop down on a flat surface and weigh each corner down with a weight for at least 30 mins.