To change back your status to VIP, go here;
https://freestylersworld.com/get_vip.php
if you had previous VIP status, then it will automatically be renewed and you won't have to do anything such as make more donations or alterations on your account.
Now, I know I'm not a FM or Dave himself, but if you don't know the email or the password to the forum account, it is most likely to still be brought up, but your IP will probably be checked in the history of the account, just to see if you actually had access to it in the past.