Sandbox PayPal test: the form submission doesn't upload in my Excel

Is it normal that the information put in the form doesn't upload in my excel when I test a paypal payment with sandbox?

There are 2 payment options in my form. By check or paypal.

When I test the check option, all the informations from the form is uploaded in my excel document but nothing appear when I test paypal with sandbox.

I checked your form and I found 6 incomplete payments. Here's a guide on How-to-View-Incomplete-Payments.

Please try to enable the IPN in your sandbox seller account.

1. Go to this link (https://www.sandbox.paypal.com/) and login using your sandbox account.
2. Go to Profile and then look for Instant Payment Notification.
3. Enable the IPN with this URL: https://www.jotform.com/ipns/paypal.php
4. Save the settings and then try it again

Please check these guides: 
https://www.jotform.com/help/276-How-to-Enable-IPN-for-Paypal
https://www.jotform.com/help/272-Paypal-Incomplete-Payments-FAQ

Hope that helps. Thank you.