Was having a hell of a time with testing and making this work. I randomly generated a password for "couch" which was
LJvDF9%fmQP9w^R!vpr#
But i would just get the "initial replication..." message permanently. I ended up making a random password with just letters and numbers (Upper-case, lower and numbers) and it all worked instantly, and the DB started populating correctly.
I believe one of the symbols (I would guess the pound?) is breaking the javascript somewhere.