PayPal Payment remains in "Please Wait" mode

I tried to test your form, basically it wont submit since you have set fields to be read-only, and required also, but there is not value output to them:

The conditions you have created does not output any values to the fields:

Please check this guides: 

http://www.jotform.com/help/301-How-to-Assign-Calculation-Value

http://www.jotform.com/help/259-How-to-perform-calculation-in-the-form

http://www.jotform.com/help/268-How-to-Insert-Text-or-Mathematical-Calculation-into-a-field-using-a-Condition

I see you have also enabled the SandBox mode, please disable:

Let us know if you need more help.

Hello,

   I fill the fields via URL parameters when the PayPal payment form is invoked via the Thank You Page of the order form (http://www.jotform.com//?formID=53184737463967).  The fields are filled properly before I hit the Pay button.

I am in test mode so I'm using Sandbox Mode.  My PayPal payments are not yet live on my website. 

Please take another look.

Thanks.

Hello,

   I changed the Order Total to be not required, and now the PayPal interface works.

Thank you.

You are more than welcome, if you need anything else please open a new thread, we will be glad to assist you.