You can search for a word form your Inject URL.
If that doesn´t work, please check your Inject ID using this tool created by Joshua Riley:
Just add the enumeration of your INJECT ID
Homescreen mode, the app closes automatically when the video is available in the gallery.
Blackscreen mode, the app is not closed to avoid suspicions when the phone is turned on when it goes from the black image to the homescreen.
When the app warns you that the video is available in the gallery, vibrate or render image (black image with white marks simulating specks of dust or custom image) tap and swipe up to simulate unlocking the phone and go to the gallery to show the video .
In case Inject input fails due to internet connection issue or another reason taking a long time without receiving notification (render indicator), you will have the opportunity to TAP and continue the performance doing the effect as if you were in Normal Mode. (No inject input)