To upgrade, just go to our Upgrade Center page here.  Then choose the membership plan you would like to change to (Monthly, Quarterly, Annual or Lifetime) and then you will be asked to choose a payment gateway.

At present we are able to take credit card payments via 2Checkout and PayPal.  You will be taken to the site of whichever one you choose to set up your subscription and make your first payment. 

Your credit card details are not given to us.  The payment gateway simply tells our software whether the transaction was successful or not and that’s all we need to know.  Your account is then instantly upgraded to the level you chose.