When you do an upload, try and have the feeling when you press submit that you are actually sending it directly to the stores. That is how happy and pleased we would like you to be when uploading your work!
But we understand that things happen and you might want to make change, fix a mistake in the text or maybe even delete the whole upload.
You cannot do any changes in the app yourself but you can easily email support (firstname.lastname@example.org) and we can usually help you out. The only thing we can't usually fix is audio files with audio trouble you need to do another upload. But adding a featured artist, adding a ISRC code, correct a mistake in the artwork - that we can do. We can even change artist names.