Hi Jeff
It causes by your PayPal account settings, I believe. Maybe in this case, your PayPal account has a different currency than the currency you are using to receive payment. You need to config your PayPal account to accept the payment automatically somehow.
If you don't know how to do that, I would suggest you to contact PayPal and ask them to correct it for you. Just tell them that the payment is unclaimed and you want it to be accepted/completed automatically and they should know what to do
Regards,
Tuan