If you just registered, make sure you have replied to the verification email sent to you. Without a reply from you (to the verification email) you are not registered on this site.
(check your spam folder if you haven’t seen the verification email)
Login is by username, NOT your email address.
Login is case sensitive. So if you created the username John Doe, you can’t get in using john doe or johndoe or JohnDoe. It must be entered as you created it.
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If you are still having problems, email john at preppergroups dot com or rebecca at preppergroups dot com – or both of us (we are in different hemispheres, so odds are one of us will be online).