https://community.gemsofwar.com/t/account-glitched-to-level-1/3537/2
Account glitched to level -1 - #2 by dhjl - Support - Gems of War | Forums
Feb 6, 2016 - I was like level 136 and I was playing a match that allowed the computer to summon allies. Played awhile and It seemed that I got enough xp to go up 2 levels...