Using Caldera Forms PayPal add-on requires API credentials from PayPal. Due to changes in the PayPal Express API, your customers may not always be able to pay with a credit card without logging into PayPal. If you are experiencing this issue, please follow these steps. This document illustrates how to enable guest checkout with Caldera Forms PayPal Express so your customers can pay with a credit card without logging in.
Please note, you must have a business account. Also, credit cards associated with a PayPal account can not be used. It is generally best to combine PayPal with a traditional credit card payment processor, such as Stripe or BrainTree.
1) Login to your PayPal account and then under the profile menu, select “Profile and Settings”. Then in the “My Selling Tools” choose “Website preference” . This may be located at this URL when logged in: https://www.paypal.com/
Find the “PayPal Account Optional” setting and make sure that is on. If not set it to “On” and save changes.
2) Install this file as a plugin:
https://gist.github.com/
Click to see the whole guide on how to use PayPal Express Checkout for Caldera Forms.