I used PayPal to pay but don't have a PayPal account. After receiving the receipt through email, I just signed up an account through the link and added the same card that I used. However, I still can not find the record in activity.
Even so, the transaction should appear on your funding source's account and should a problem arises, could always call customer service to open a dispute for it with the receipt ID number from the email confirmation. They can link the transaction to your PayPal account then.