Collectible Card Game Headquarters

Sorry if i'm posting this in the wrong place, but i need some help with "black mana symbol" that skull, never appears, i only see a "square" instead of it, even if i download the mana symbols.. does anyone knows what is happening?
One more thing.. where can i find explanations about the ratings, and how to improve them? what means that abreviations I: Q: D: C: R: ?
hope someone to help me, plz, thx anyway

nobody?? no one knows nothing?

It's Christmas. People might not be online right now.

For the quit abbreviations, I=Idle (stopped playing for 10 minutes), Q=Quit match, C=Quit during deck construction in limited, R=Quit during the rounds in a tournament (before being eliminated).

Thx friend! do you know how many points are earned when we finish first in the draft? and how many points we lose when we quit, or concede, or do not win? is there some kind of site, with FAQ, or a tutorial with all this explanations?? thx again! sry for my english

It's an ELO rating system, so it goes up and down based wins and losses and what your opponent's rating is. I don't have specifics. You can possibly google "elo rating" or check the github page to find the code.