Hi,
Payment goes to the email address you entered on the selling form. To check, click on 'sell similar' alongside the item and go to the payments section to look, then press the 'back' button.
If it's a valid address not registered in PayPal, you can add and confirm it via the Profiles tab in your account. Payment shoudl then come through.
If there's a typing error, the buyer will have the option to 'cancel' the payment. You can then use the 'request money' tab in PayPal to send them an invoice. Select 'goods' and enter the item number and title.

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