The v3 has a bug, but the v2 was off the Apple Store.I felt bad, because I have purchased v2, but I can't use it now

1.Is there a way that I can download the v2 from the Apple Store? Or can you give me a refund?
2.If you’d like, please fix the bug.

Go to your “Purchased” apps, you’ll find it there and will be able to reinstall the app.


Thank you!