Board Thread:Support Requests - Designing Your Wikia/@comment-27384943-20160402221824

I have made a wikia, and I've decided I want customized achievements/badges. I went on the page about them, and it told me to make a page that says: '''Special:AchievementsCustomize. '''

I tried creating the page, but it said Sorry, the page title was invalid. I don't understand. Can someone please help me? 