I'm having trouble getting the checkbox extra field working.
I have created an extra field called 'Instruments/Services' with the following items as available to be checked: Bass Guitar Lessons, Trumpet Lessons, Recorder Lessons.
The field appears in the edit profile great, I can check the ones I want but when I hit save they revert back to unchecked.
Here are screenshots of the setup:
and how it appears in the edit profile page:
Radio buttons work great as do selects, it's just the checkboxes that don't seem to save their value. I downloaded the plugin from here: http://radiok.info/wp-content/uploads/2012/10/register-plus-redux.3.9.zip
Thanks so much for your help!