CB Paid Subscriptions

When attempting to subscribe to a plan that only allows recurring payments with a PayPal Standard gateway that also only allows recurring payments while sending invoice address and using a London postal code formatted as "## ###" causes the payment to fail. The user is presented with a generic "Things don't appear to be working at the moment. Please try again later." no information is given to the site via IPN or history log and no further information is given to the user that the postal code being sent in the "zip" form parameter is failing. Turning off sending of invoice address appears to resolve the issue.

https://www.joomlapolis.com/forum/255-developer-members-support/242408-solved-is-it-possible-to-use-different-gateway-behaviours-for-different-plans?start=6#318658