PayPal checkout client authentication failed error

I am having a submission error and paypal payments are not going through. How can i correct this?

PayPal checkout requires a PayPal Pro or business account.  If you don't have a PayPal Business Account, then you won't be able to integrate with PayPal Pro or PayPal Checkout. You will be limited to using the regular PayPal integration.

Related guide: How-to-Integrate-Form-with-Paypal-Standard

If you do have a Pro or Business account, make sure you are using the live keys instead of the  sandbox keys:

https://www.jotform.com/help/542-How-to-Integrate-Form-to-PayPal-Checkout