If you would like to cancel piZap PRO, look for the "Manage Subscription" link in the top right drop down on the main start page. From this page you can cancel or manage your subscription.
If you do not show an active subscription, but you are sure that you have one, it is possible that you logged in with the wrong login.
Many users have Facebook logins originally, and when they signed up for PRO, but forget about it and later try logging in with a username/password or vice versa. If you originally signed up with a Facebook Login, make sure that you log in again with Facebook.
If you are still having trouble please contact us.