GameBattles won't let me create a Halo 4 team

So me and my friends are really good at Halo, and we decided that it would be fun to possibly make a little bit of money off of it. When I tried to create the team some weird things happened, so I’m just going to run you through the process. So I went to the GameBattles website, clicked “Find Your Game” or whatever it’s called, then I clicked on Halo 4, then I clicked on ladders, and tried to enter us in one. It then took me to this page that said I needed to log in or sign up to do this. I though this was weird because I was already logged in. So I just clicked the log in button and it took me to this page that was completely blank, minus a button in the upper left hand corner that said “Continue”. I click the button, then it brought me to a similar page that had nothing on it but this one line of text:

“OpenID authentication failed: -Yoink!- already used or out of range”

So I just went back to the point where I hit “enter ladder”, and the same thing happened again, but this time after hitting “Log in” I waited and I saw the “Continue” button, but after a few seconds it disappeared, and it took me right back to the page where it said log in to enter the ladder. What is this and how do I fix it? And I am 100% sure I was logged in.

Shouldn’t you ask the GameBattles support? How are people from this site supposed to help you with a glitch on their site? :I