Rule number 1# Don't write the shipping label, print it with Paypal. BTW Paypal contacted me to say to inform me that the buyer needed to contact them to authorize the transaction. I informed the buyer about this and he replied that he contacted Paypal to confirm and that the fund would be available in 48h (That was 16hours ago). A few minutes ago, Paypal sent me a mail to inform me that the transaction had been reversed. : / Here's the problem, the transaction has been reversed but the buyer is still able to leave a comment. I've contacted ebay about that.