Doesnt work

If I could give this app a zero star, I would! Like everyone else, I paid for this app, and it worked like a charm on my older IPhone. It does NOT work on my IPhone 6+. What gives? Professional photographers still recommend this--do they not know it no longer works? Shame on the developers and Apple for continuing to sell an app that does not work!

CAS1951 about DOFMaster