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Hey guys this sounds so stupid but it has beaten me.. What login do I use to get into multiplayer? I get an error message "Invalid Master login/password" I am using the credentials I used to purchase the game. What am I missing here?

Sorry guys but I tried to post before and could not see it. This is a test

OK, I am really not that stupid but this has me beat. I have DCS P51 and I am trying to connect via the DCS World Multiplayer icon. I get asked for a username / password but it just rejects my input. I am using the same U/N and P/W I used to buy the game. Am I missing something? Help me get in there - you will get free kills until I learn it :D