I've unlocked power 400 of Leah and Valorie but once i enter the witch academy and get back out, Valorie Power gets set back to 300 as the max and only her, i don't know if other places can trigger this bug, but at least i wanted to report this case
found a fix for the problem, by going to the corrupted seed dungeon and back out it solves Valorie's Power and its once again 400