If you haven't registered for Passvers iPhone Unlocker, everytime you launch it, you will receive the notice like this:
After you pay for Passvers iPhone Unlocker, you'll receive an e-mail where you can find your activation code. Tap them into the column to use the activated version. If you haven't bought it, click "Buy Now" to receive your registration code.
Note If you accidentally close the window when you launch Passvers iPhone Unlocker, you can also click the top-right corner of the interface and select "Register..." or just click the key icon to open it again. If you are using the inactivated version, you may be stuck in the last step to wipe the codes.