Blurred camera view on iPhone 6s plus

I dont understand why its so hard for you to fix this issue, but even after this long waited update, on my iPhone 6s Plus the problem persists: the camera view from this app is STILL blurred resulting it fail to read smaller QR codes. I have to take the pic using the native Camera app and import it to this Scan app and then it can read, which is very inconvenient! Very disappointed!

TGNY2012 about Scan - QR Code, Barcode Reader