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Try clearing your web browser's cookies for our two domains: psychcentral.com and psychcentralforums.com (you'll have to login again after you do this)
chrome://settings/siteData
search for: psychcentral.com and psychcentralforums.com
Click on the trashcan icon next to our domains.
Restart your browser just to be sure. Then try logging in with your current password and it should work....