Payment needs to be made at PayPal with the same email address as used for your CheckPage account for CheckPage to be able to correctly identify the payment and update your account automatically..
If you cannot use the same email details for the payment as is used for your CheckPage account, please make your payment via a different email address and then email firstname.lastname@example.org the details of each email address and the payment made.
Your account membership expiry date or account credits will then be manually adjusted as soon as possible.
UPDATE - 2pm, Tues 10th May 2016: as long as you've emailed the details for a first payment, subsequent payments should auto-update your account. If it doesn't update, please email.