Not Happy Want REFUND or fix – SlowPro & fast video mo.tion cam.era - Stop speed editor (youtube edit.ion) Review

Bought pro version $4.99 to remove watermark - app will not load video to and will not remove watermark. How do we get a refund or when will they fix this?
Review by absterella27 on SlowPro & fast video mo.tion cam.era - Stop speed editor (youtube edit.ion).