New problem. I went to edit one of my songs today and then saved it. The saved version rendered several tracks two octaves too high. I cannot upload the song like that. Restarting my phone and the app did not help. And now, I also cannot work on any other music until this issue is fixed in case whatever happened affects the other songs as well. Lowered to two stars for this and because the previous problems I was having with disappearing songs were never fixed either.