Snow Day Malzahar Not Allowed In Poro King (Gameplay)

I have picked Malzahar in 3 games of Legend of the Poro King, selecting his new skin in all of them. Once in the game I was default Malz, with no sign of my skin. I am very upset by this, as I should already have one of the new icons, but I wasn't allowed to use my skin to earn it.