Does not store my videos after recording.

Im not sure if its something Im doing wrong, but after recording, I push the red button to stop it and Im assuming once its been pressed the video that was being recorded should store in the gallery. Well, every-time im done recording, my video does not save to the app photo gallery or my main phone photo gallery either. Its frustrating recording a 25-30min video and in the end it doesnt save. I dont even get the chance to preview the video, which is irritating . When it has saved though, which isnt very often, the quality is amazing and I love the outcome of the photos and videos. But like I said, it rarely saves anything, so Im disappointed majority of the time with this app. Could someone tell me if Im doing something wrong? Because aside from that and if it can be fixed, I would love this app!!!!!

CarmNicole321 about Night Vision (True night mode amplifier video app)