The export function appears to work fine on my end. Are you sure they’re not just getting caught up in the downloads on your device? That happens to me sometimes when playing on phone or iPad.
That’s odd. I do have a fix in the new update that allows you to scroll to the bottom of that save screen, and there’s save and load functions down there; you might not see them presently if you’re playing on mobile. That may help.
I’m glad you like the music! The songs are all on pixabay. I mention the artists on the credits page but I’ll see if I can link them, too.