Suddenly not working. Black screen even after deleting and re-downloading – Breethe: Sleep & Meditation Review

I used to like this. Paid a LOT for the lifetime subscription. Now when I try to use it, I can hear some of the background music, but the screen is totally black. I tried deleting and re-downloading several times. No way to contact the developer so leaving a 1 star review until it’s fixed
Review by rlevqwrrty on Breethe: Sleep & Meditation.