PayPal: Missing submissions

I have had several submissions, but they do not show up. I have received the payment through paypal, but I cannot see the data on the site.

To which form is your issue related to? 

I checked the submissions page of all forms on your account and the submissions page of the form XC Series Registration is blank. However, I am not sure if your issue is related to this form because you received only 3 submissions this month from your other two forms. 

I saw that your other forms have Incomplete Payments.

Paypal Incomplete Payments FAQ

How to View Incomplete Payments

If you receive the payments to your PayPal account, but the submissions were marked as Incomplete Payments, most likely the PayPal IPN is disabled on your PayPal account. I would suggest you to enable IPN on your PayPal to prevent similar issues in the future. 

How to Enable IPN on your Paypal Account