Paypal not working on VIP form

Hi I have contacted you about this in the past the Paypal payment function on my VIP membership jotform does not work. Customers are unable to pay. This form is embedded into shopify website. What happens is after the customner has filled in the form and then choose to checkout with paypal the next screen is just a blank white page, it does not direct you to paypal or anywhere to complete payment.

I have tried deleting the code and re-adding it but the problem continues to be there. Please could you investigate this and advise.

Many Thanks

I have tested your embedded form and your stand alone form and both times when I submitted your form I got redirected to PayPal. 

Which device and browser are you using when you are redirected to blank page instead of Paypal? 

I saw that my colleague suggested you on your other thread http://www.jotform.com/answers/586876, to embed your form with iFrame code instead of script code. Did you tried that? Inside of this guide you can find how to get iFrame code of your form: http://www.jotform.com/help/148-Getting-the-Form-iFrame-Code 

Let us know if you need further assistance.