As the title suggests I can not get PayPal to activate subscriptions after a successful payment. I am using the PayPal sandbox and have the IPN url configured correctly in the sandbox account. Payments are set to complete immediately in the sandbox account as per the documentation.
I have checked the IPN history in the receiving sandbox account and it reports ipn's have been sent with a 200 response. The notification testing tool also reports the listening url responds with a verified handshake.
Yet despite all of the above, subscriptions fail to activate!
I have checked the NGINX logs and can see this error:
Undefined variable: recurring in /var/www/html/plugins/payplans/paypal/app/paypal.php on line 110" while reading response header from upstream
I am running this on a dedicated server (SSL and curl are both installed), i have given you the credential to log in and look around via SSH along with admin credentials. I would be most grateful if you could check things out for me!