Stupid Nanobit ID

I just got the game and in order to compete in fashion shows I need a nanobit ID or a Facebook account. I clicked Game Center for my Nanobit ID but it isnt working, it say only letters and numbers but thats my Game Center! Do they expect me to change it? Am I the only one having this problem because it happened in design studio as well. Please try and fix this.

Louis_the_Turtle about Fashion Studio, v3.0