Registered members should not see the member registration area.

[Seditio CMS]

The registered member should not see the registration area.
To prevent resubscription.

For this follow the below.
Find it at users.register.inc.php

if ($cfg['disablereg'])
{
sed_redirect("message.php?msg=117");
exit;
}

add below

if ($usr['id']>0)
{
header("Location: ".$cfg['mainurl']);
exit;
}