I have tried and actually set my birth day up, but it never saves it. I have tried multiple times and it always says it save but never does. Does any one know how to fix it?
It probably has something to do with the preparation for the new AG v3.0 website tht's coming... they removed the ranking/age/text part that was on the profiles a while ago and the fact that you're not able to save your birthday might have something to do with that.
Best leave it be and wait for the new website to launch. I'm sure you'll then be able to set it right again!