Personal Trainer Issue

[Toxcatl]

Hi,

I have a 4 star player in my team, I used tokens for personal trainer on him to bring him to 5 stars but from some reason the tokens got used up & the player didn't improve at all, he is still 4 stars and even at the exact same skill values as before I used my tokens.

Any idea why? or how to solve the issue?, is the personal trainer effect not immediate?

Thank you.

You know that if you buy green packs and spend them to train a player, it is going to be 3-4 times cheaper, don't you?