Member Portal Invites Not Working Correctly

Member Portal Invites Not Working Correctly

Hello,
I just bought the Member Portal add on for my site today and I noticed an issue with it. I have public sign ups turned off because I just want it to be invite only. When I invite new users and they click the click in their email, it brings up a page that has a box for email address and nothing else. When then click the continue button, nothing happens. The only way to get the password box to come up is to reload the page. Could you please help me with this?

Thanks