I moved your post over from the poorly named Community Help forum, which is for getting help using this forum system, to a better forum, CC Services.
IIRC the logon to the Behance system is the same as logging into the main Adobe website or to this forum. You use the Email address and password of your Adobe ID.
Is that what you are using?
DO NOT POST THOSE HERE IN THE FORUM.
I hope this helps. Best of luck to you.