I find it incredibly unfair that you ask for "original player name" as an account verification question. I changed my in game name as soon as the name change tokens became available and now I can't recall what it was originally. You also don't warn summoners about this. Here is the original article:
https://forums.playcontestofchampions.com/en/discussion/94030/introducing-in-game-name-change-feature It doesn't state anywhere to save off what your original name is for account verification. Work with your summoners. Let us verify another way! Help!