I am having some difficulty with online payments generated from a WordPress website. I have PayPal connected to a Gravity Form with a PayPal Add-On plugin and to The Events Calendar with a Registrations plugin. The payment actually goes through to PayPal in real life, and I get a receipt "You paid $2.00 USD to (Seller)". However, no email is triggered by the plugins as expected. I discovered that in the PayPal Instant Payment Notification (IPN) history, the status says Retrying. Likewise, the Gravity Forms Payment Status says Processing and Registrations for the Events Calendar shows the status as Online Payment Pending. It seems like one part of PayPal is working, but the IPN isn't communicating back to the website. Any ideas?
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