linode 取消了我的账户

Hello,

I apologize for any inconvenience, but it appears that our Fraud Detection Team has deemed your account particularly high risk and has cancelled your account.
Your $5.00 deposit has been refunded and the refund should process within seven business days.

I apologize for any inconvenience.

Thank you,

Dave.
这是为什么, 有人遇到这样的问题吗 ？