4x32 scope on croobow cant get it to zero right help

same as mine then i like mine no problems so far,lol. my tekken heads work well out to 70 yrds but my steel force peter out at 50 on accuracy issue.

what line at 70

5th bottom line I have gap shot at forth to fifth and on my target is around 9 inches difference.But that may change because a new string will be added this year so new adjustments will be needed.