Max League level 19?

[IGOR]

Today i saw something that bothers me and i need some good answers.

I have some friends that they are above the league level (20,21,22), but they still remain in the same league with level 19.
I wanted to see if they change their former club but when i saw in the trophy room i saw that they have the exact number of trophies (league) like the have in their manager level.
So i want to know will i have in my server (107) a max league level of 19 or 31?