You can set your PayPal email address here:
If there is no PayPal account for the email address we tried to send the payment to, then any unclaimed payment will be automatically rolled-forward and included in your next payment, at the beginning of the next month.
Please note that if there is a PayPal account associated with the email address we sent the payment to, then that payment will be completed and added to that PayPal account. If you want to use a different PayPal account going forward, you should be able to just transfer the money from the PayPal account that payment payment was sent to, to your other PayPal account.