Having trouble with Paypal function

the blank is showing up with the amount to be donated but nothing happens and no button appears to have the paypal transaction. Please reply with instructions. Paypal integration is the ONLY reason I have JOTFORM.

I am not integrating it into Wordpress as yet since it's not functional.

I have checked the form you have integrated with PayPal and I can see it works fine, do note that to get redirected to the PayPal payment page the user needs to click on the submit button, after the payment is done the submission will be completed. 

Here's a link to a guide about PayPal forms that you may refer to: PayPal-Forms