Roketa key problem

[MJP]

Hi all, I recently purchased a used roketa maui 50st 50cc moped. Today as I was leaving the store, the key snapped in half. The key isn't stuck in the ignition though. I don't know anything about this scooter, and don't know how to go about getting this replaced. It's the only key I have. Can someone help me out please? I assume I'll need a new ignition so that the keys match up. I've searched Google and don't know which assembly is right for this scooter. Plus I need to know how hard it'll be to change. Please please please help me get this figured out. It's my only mode of transportation for now. Thanks!