email inbox and click the link that you’ll find inside the message sent by Kik to terminate your account.
After cancelling your account permanently you will lose all information, contacts and settings, so think it through before you do something that you might regret. After deleting a Kik messenger account you will not receive messages or emails anymore, your username won’t be available ever again, and you name will be deleted from the Kik contacts lists of people you’ve talked to.[1]
References:
1. Kik Support Center.