Music Crashes App + Third Party Videos Glitch

Okay, so its a great app overall, but I have two main problems.
The first one is that, as I stated in the title, whenever I try to add or get rid of music - doesnt matter if its from the YouTube soundtrack or from my downloaded music - the app will freeze for up to 30 seconds, then crash and end up in my home screen. I want to upload a video but I accidentally put music on it and now I cant upload it without the music. Please fix this.
The second problem, also stated in the title, is that whenever I try to use a video from a third party screen recorder, (AirShou, to be specific.) it has a weird glitch where I can see the video but if I try to trim it or edit it in any way (on both the Photos app and YouTube Capture) it will make it so the video just turns black and will not show anything.
If the video is from a music app (The only one Ive had problems with is an app called "Auxy." GarageBand works fine.)
it will be fine in the Photos app, with no problems viewing or listening. But if I try to watch it in YouTube Capture, it appears to be stuck at exactly half the time of the videos length and it shows only the first half of the video. The same problem happens when it is uploaded, but the published video will be only half the length of the full video from the camera roll. It still plays only the first half of the video.
Other than that, the app is great and I have no problems with it. Thanks to whoever sees this and helps with it.

% Gamer72 % about YouTube Capture, v2.0.2