The activation code received after the purchase can be used when transferring the current VIP license to a newly registered email account. Please do not use the activation code to activate the VIP account because the account is already VIP. If your account is still in the trial version after the purchase, please log out of the existing account first and relaunch the program, then log into the account with the email you used to purchase the program along with the password is alright.
Usually, the free registered account will automatically become VIP after the VIP license is purchased from the official ApowerREC site successfully.