If you're having sign in problems, don't make a new thread; post here with details.
When you sign in, make sure you type in your username and password correctly. Always choose a password that's hard for other ppl to guess; don't use your name or surname, pick an obscure one that's easy for you to remember, but hard for other ppl to guess.
If you forget your password, then you can request a new one to be sent to you. After you've used the new password, you can change it in your personal preferences.
More information on signing in: http://www.thedollpalace.com/manual/..._article_id=12
More information on changing a password: http://www.thedollpalace.com/manual/..._article_id=23