User list not saved on subscription

Hi,

Thanks for your plugin.

I fixed a small bug that was causing user data not to be saved on subscription.

With the current version, if you create a WP account, you’ll be (depending on the plugin settings) subscribed to a mailchimp list. The problem is you’ll not at this point have a user meta to save the lists you’re subscribed to. It means that when as an admin you edit this user, the multiselect with the lists will not have the lists preselected and if you make a change on this user, he’ll be unsubscribed from all the lists.

I changed a bit the pmpromc_subscribe function so it save the data. Here is the code I’ve changed

https://pastebin.com/CQWSJfc7

If you can give it a go and integrate it in a new version it would be much appreciated.

Thanks.

Best,
Ben