Really Bad Issues

Even after numerous updates of supposed "Bug fixes" I have yet to be able to use this app at all. Ill make a video, no problems with recording or anything like that, but then once I finish, the app crashes every time I try to play it and listen to it or edit the audio (how loud each video is and the left and right thing) it just crashes. I tried uploading it and saving it to camera role, but all I get is a video with no sound except for the first 2 seconds. This is a serious problem and very irritating. I really liked this app when it functions properly so please fix this...

B Rock5666 about Acapella from PicPlayPost, v1.15