What exactly do I need to do? The tall tail is an inherent aircraft feature. I understand that it looks unbalanced but some aircraft just don't have the picture perfect proportions...
My view is that the first crop is definitely the better version. I don't see it as particularly unbalanced - I think there is an argument for allowing slightly more space above the tail if that is available to you in the original, otherwise it looks okay to me. It is a little unfortunate that you have the arm of another person in the crop, and I wonder whether that has influenced the view of the screener.