Hi again super_superstar​ 

Thank you for your answer, and that explains your scenario. Your item started with 2 playstyles+, (acrobatic and rapid if I recall), and you added a third with long ball. The driven prodigy evolution gives 2 playstyles+, but up to a limit of 4. Since the first level gives tiki taka+, your item reached the maximum playstyles limit upon completion of that level, meaning he is not eligible to receive another playstyle+ upgrade from this particular evolution.

You can see the limit in the image above. Again, thank you for answering my questions so that we could get to the bottom of this, and I would strongly recommend that you look carefully at the preview of your upgrades on the final product before starting any evolutions, so that you can avoid that type of disappointment. 

All the best to you!