Snapchat has automated systems that try to detect when accounts are being used for things like spam. Unfortunately, sometimes legitimate accounts get locked by mistake, and it looks like your account has been locked. Please visit this link and provide your username so that we can restore legitimate accounts: https://accounts.snapchat.com/accounts/unlock
Thanks for your patience and support as our team continues to make improvements to Snapchat!
Best, Team Snapchat Snap Inc., 3000 31st Street, Santa Monica, CA 90405