Alloy problem

[Symbiote]

Hey I need some help. I trying to play as the alloys, bu when I activate all the codes for the alloys to playable, but when I add those the and my normal codes, the game doesn't load in gecko os. Like, it gets to sd codes found aplying, but it never gets past that. Also, I recently made a custom css, and I've seen videos of one's where the alloys have there own select icons, how do I add those to my css.