Why doesnt it give better instructions for signing on help

. Like they say to downgrade i dont know how to downgrade internet explorer to verison 6 also the posted this if your having log in errors can someone please translate .

what they are trying to say cause i tried logging in just about everywhere but it doesnt work.
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Is your system returning one of these messages when logging in?
‘Incorrect ID and password’,
‘check availability of I.D’,
‘pmi-sso-return-url doesn’t exist’
Currently, even with valid ID and password, some users still might be having difficulty logging on due to wrong access to the main server.
Game users should visit Game & Game or each game's web site and log in with the login button at the head of main page. This is a more stable way to access the main server.
We hope you could enjoy Game & Game without any more login problems.