As long as you send an E-Mail to
[email protected] with your current account name and the date you purchased the account, and what you purchased it for, your account should be fine, and they can not claim it was hacked in the future to recover their account. I would advise that you tell the person you bought it from to send an email to
[email protected] verifying they are selling the account to you. That way there is no possible way they can get the account back.
Thanks,
Kenneth.