A confirmation screen with the option to edit entries or proceed to Paypal

Was this ever resolved? Our customers are getting really confused when they just go to a blank screen after making their payment. 

You can use our Preview Before Submit widget to view form entries before submitting:

https://widgets.jotform.com/widget/preview_before_submit 

But with regards to the blank screen after making a payment, that is a different issue I think. After completing the payment, your customers should be redirected to your Form's  Thank You Page, assuming that they clicked the return link.

For Paypal standard, after completing the payment, your customer should get this window:

Clicking the return URL, you should be redirected to this page:

As you could see, the page will auto redirect in 10 seconds. You can click the link to skip. The page will redirect you to your form's thank you message page.

If you are using Paypal Pro, you'll be automatically redirected to the form's thank you page.

I hope this helps. Let us know if you need any further assistance.