Sub species growth Penalty IN DETAIL

Tonight was a sad night, I finally got to Sub adult on my Trex, totally new to the game, I decided to change my sub class to try something new, the warning came up stating there would be a growth penalty. Never would i imagine it would be by a whole Growth level...going back to adolescent felt like a slap in the face and should not have happened. No where does it state you will go back a WHOLE LEVEL, definitely would NOT have done it if I knew. not happy. Change the description and actually tell your PAYING PLAYER BASE the actual cost of things.