Getting "Missing Security Answer" when changing Game Centre nickname When I go into settings>gamecentre>profile to change my nickname, a box pops up when I click Done saying, "Missing Security Answer Please enter the answer to your security question." 
I've tried everything from logging into my apple ID and changing the security question and answer to restarting the ipod. I'm not sure what's going on or how to troubleshoot this.
Apple's troubleshooting article has details on how to proceed with troubleshooting Game Center.


http://support.apple.com/en-us/TS3970


Why not start there and ask a second, more detailed question if one of the steps has you confused or stuck. Without more details edited in to your question, it's hard to guess where you are stuck in the process.

It might be as simple as you following the steps above and then entering the correct "answer" to your changed security question from https://appleid.apple.com