Won't connect to Paypal account

Hi there,

Thank you for all the customization options in this plug-in. I have been able to make two forms work successfully, both located on this page:

http://www.theashevilledarkroom.com/supporting-memberships

However one other form I created simply brings me to the Paypal homepage rather than displaying a Purchase page for my business with the customized options:

http://www.theashevilledarkroom.com/connect/purchase

Within the Form Preview, it functions correctly, but it does not do so live on the site. I have the amount set in USD, have the same email address entered for all three forms. All the settings among the three forms look the same as far as I can see — I even turned off the font styling for the faulty one to see if that made a difference. Thanks for your help!

https://wordpress.org/plugins/quick-paypal-payments/