Hello. This is Kakaotalkhelp.
We will respond to your inquiry.
Sorry for the delay in replying to your inquiry.
As we have informed you, This message "you're unable to sign up for KakaoTalk due to a violation of our service policy regarding sending of illegal/spam messages," means our system has found a user who has been repeatedly sending illegal/spam messages.
In order for us to protect our Kakao users from severe violance mentioned above, we put suspend on the device itself which had been used for multiple sending illegal/spam messages.
As always, thank you for using KakaoTalk.
We promise to improve our service for your convenience.
@KAKAO
This mail is only for sending, so we cannot respond to your reply.
Please don't hesitate to contact us at Kakao website(http://www.kakao.com/talk/en/contact) if you have any question. Thank you.