I love this module. I've spent the past two days trying to make others work so I was glad to discover this one! I have one problem though... If I set it to display extra fields, I get a couple of hidden fields displaying. If I set it to hide extra fields, I only see email and there are two more required fields (first and last name) - so the sign-up doesn't work. What I want is to be able to display just the required fields. If I can't do that, I'm back to square one.
Would be great if this extension came with a bit more support. Otherwise, it is a great module and I would highly recommend it!