Jordan Acosta

Thanks for the tip, and link to that plugin. Using discount codes is the approach I’ve settled on, based on advice I got from the PMPro forums.

I had another look at ipnhandler. It appears I was mistaken, and $subscr_id is actually the id of the user’s existing subscription, (if there is one,) instead of of the id of the subscriber.

Anyway, it looked like the proper way to do this would be change the values using the filter hook pmpro_ipnhandler_level, but I guess that only returns the level, not the ID.

I added a user_email field, and changed your plugin to hook into user_register instead of register_post. That got it working.

It looks like Paid Memberships Pro bypasses the typical user registration flow of register_form –> register_post –> user_register, because it uses insert_user to add the user to the database. The only hook it triggers is user_register.

So this was an issue with Paid Memberships Pro, not Mailchimp for WP.

Thanks for your help.

I just tried tolling back to version 0.3, and it still doesn’t work. Your plugin probably isn’t the real issue, then.

Thanks for your help. Sorry if I wasted too much of your time.

It’s using a custom registration form, set up by the Paid Memberships Pro plugin. I made sure that <?php do_action( 'register_form' ); ?> is in the template, and, under 0.3, that got it working.

I have a bunch of email addresses on Bluehost I created just to test this, and am using a MailChimp list I created for testing as well.

For merge variables, the email is required. First and last name are present but not required.

The site is running on WPEngine, by the way. And I’m developing in a virtual machine running Ubuntu 12.10.