Lockitron registered by someone else and I can't acctivate

Hello I have been trying to activate my lockitron but I can’t get it working because is registered by someone and I can’t registered or activate on a new account
Can anyone tell me what option I have otherwise I have to ask for a refund

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@Julian where did you purchase the Lockitron? They haven’t been sold new for nearly two years. If you send me a PM with the serial number I can take a look.