Hi sweetheart :)
No I don't think it has to do with the profiles, because I found out you can sign in and post w/o filling out one, you just don't show up on the members page.
To sign in, just use the full e-mail addy you signed up with, and your password for the site. That works for me, and I hope it will for you too, if not let me know k?
To get into your profile, just click on the box that should be your profile picture. You can do that from any post you have created.
Good luck Lia