Can someone explain why some score/points are calculated incorrectly on scorecard (stableford)?

I went 18 holes. According to the slope I should have 17 extra strokes from par. This is correctly reflected and positioned on the scorecard but the points allocated for three of the holes are incorrect. See picture of 

Hole 6. I have one extra stroke plus par = 5 shots to make par. I did 5 strokes which by stableford should give me 2 points. The app gave me 3 points.

Same for hole 12 and hole 15. All other holes calculated correctly.

Furthermore, I cannot find any way to edit the score. I can only edit/change club used, add or remove strokes. But in this case I cannot add strokes since I made exactly that number of strokes for hole 6, 12 and 15, it is just the points awarded that are incorrect. All in all I should have been awarded 34 points for the round, but with these three errors I got 37 points.

Can someone shed some light on this topic?

Thanks

/Magnus