Invitation Code OR admin check

First of all – i tried so many registration plugins out there and i really love RPR, works like a charm. Thank you for this genuine plugin!

For the hp of my local church I need a way to restrict user registrations.
I checked the option “Moderate all new user registrations…” AND set up an invitation code.

Problem now: Even if a user has the right invitation code filled in, he cannot log in until an admin verifies this user.

What I’d like to have:
– Admin moderation if user entered no invitation code.
– User can log in directly after registration if he used the right code.

Is that possible somehow? Or did I set the wrong options?

– Lukas

http://wordpress.org/plugins/register-plus-redux/