SolvedBO2 Master Prestige Question

Don't if this is the right section to ask this, but here it goes, i've been using the XP trainers which I downloaded off MPGH, ive completed prestige 10 (level 55) but it wont let me do the Master Prestige 11

Anyone how to fix this?

Fresh restart? en just dont go prestige 10.

Ahah, it's not an error, when you are 55 prestie 10, you need to complete the level 55, and after a match, (it will be automatically) , you will a a popup notified that now you are prestige master. Just play.

But me, i never hack, so maybe ..