Did you just pay the one time donation fee to an organization and then join?
Yes, and I will advise, if you plan to use them for savings or anything of that nature, you can only deposit $50 a day electronically for the first 6 months. I paid the $10-$15 donation and my account was active. Be sure to print a copy of the registration pages when you first sign up. PenFed loves communicating through snail mail.
I failed to make copies of a few pages and I wasn't able to set up my online account until I had received my first piece of mail from them.