G-Sight Laser Training Pro ne fonctionne plus

The target on the back of older user manuals will likely give problems. -Avoid having shiny targets or shiny objects, especially tape on or near the target. -Avoid having constantly changing lighting such as shadows on or near the target. 
-Avoid shaking the phone/target while in a session. -Phone should be placed within a yard of the target.  After making absolutely sure firearms are unloaded and no live ammo is in your training area, align the target edges as closely as possible to the screen edges and press start.  If you see large patches of light reflecting off the target in your phone screen, you may encounter detection issues. -Avoid using damaged targets.  The G-Sight Laser Training Pro Mobile Application takes dry-fire training to the next level, allowing you to safely train when you can't get to the shooting range.  It will let you know if there’s any potential issues. 
-Avoid bright light, especially sunlight on or near the target.  Creases on the target, or on the edges of the target may reflect light as well.  For best performance performance, this app is intended for use with G-Sight branded ELMS and Gen 2 training lasers only.  Press the “Train Again” button to restart your training.  This app will record your laser shots so you can review your performance and improve your technique.  Return to your shooting position and begin training.  If you see a black screen, when trying to set up, your device may be too slow to use it. -Suggest you run a “Test Setup” before starting.  When your session is complete you can review all your shots by swiping right or left.  It requires no special targets; use your favorite paper targets.  Sessions are up to 5 minutes long. -Use an iPhone 5C or newer.  Older devices may not be powerful enough.  The app will automatically calibrate.