invalid message @sign-in

This is my 3rd registration because I can never re-sign in with any registration once I log out. Thinking I may have made a password error on my first registration, I carefully took note of this. The send a link for password change does not send the link also.The only reason I am able to be in here now is a third fresh registration that I haven't logged out from yet. once I log out after registration I can not get back in--invalid password message. maybe the 3rd time will be the charm but I'm running out of fresh e-mail addresses to register. also-if i do happen to get in again after logout-how do I delete the bogus accounts I had to make?

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Made it back this time but need to know how to kill 2 bogus accounts

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dprevived.com/u/alansh/153/posts/