My Form says 'Invalid pay pal account used contact form owner'

I would like the form to not have any payment included, as I only accept COD.

If you wish to accept only the order but not payment, then you can use our Purchase Order instead of PayPal. First, remove the PayPal integration by clicking on the delete icon marked in the screenshot below:

Next, select Purchase Order from the Payment list.

Here the user can select the product and see able to see the price. It allows the user to submit the form without payment.

Here is the guide: https://www.jotform.com/help/460-How-to-Create-Payment-Form-with-Purchase-Order