If you obtained a VPOP3 Home User licence via http://www.trialpay.com and are unhappy with it, you will need to get in touch with TrialPay directly. Our licence is given as a complimentary offer after you have purchased through them, and they have notified us with your details.
TrialPay is a service which allows you to try out a different product or service, and get a VPOP3 licence as a free gift.
Please be advised that as the purchase was not made through us, and as our license key was complimentary, we are unable to grant a refund of your purchase, so you should contact TrialPay's customer support to ask for a refund from them. You can contact them at https://www.trialpay.com/support/