Why my payment form is not working?

im trying to receive payments and its not working

the link I provided is what shows once you hit submit from my jotform.

That error usually shows if the account you entered in the integration is incorrect. Make sure to enter the correct email address of your PayPal account.

Also, check to ensure IPN is enabled in your PayPal account and that the account is able to accept payments at this time:

How-to-Enable-IPN-on-your-Paypal-Account