Why am I unable to add PayPal to my form?

Hello! I have made a form but it will not allow me to add payment to my form. It only has square enabled. All of the other ways to attach payment to my form have been greyed out. Why am I unable to attach PayPal to my form? Please help. Thank you, Tiera

You can only add one payment field to your form. To add your PayPal to your form, please remove the other payment field and then add the PayPal by following this guide: 

How-to-Integrate-Form-with-Paypal-Standard-

Give it a try and let us know if you have any questions.