Grimsheéper
Veteran
I know that, I purposely log out to refresh our arena rating when myself and my partner want to check our rating gain.MMR is pulled through Blizzard API. It updates people upon them logging out, like the armory does.
What I'm addressing to is when the whole ladder bugs out and everyone's rating/team is 0 wins 0 losses and even refreshing your character forcing an update doesn't do anything at all. You must have experienced this before? It happens everyday.