You really aren't supposed to. If you file a complaint or someone files a complaint against you, I will recheck your request to make sure you are still verified. If you aren't, then your verification would be removed and may not be reinstated. The best thing to do when applying is make sure the email address on the forum is what you would like it to be and then if it's not your PayPal email, add the email on the forum as an alternate email in PayPal. What I do when checking is make sure the registered email address here is verified on PayPal. You can change the email here if you like but make sure it is on your PayPal account.