Unable to sign into iTunes Music Match, but was able to prior

I was able to sign into iTunes Match with my Apple id under my profile in addition to signing my wife in with her own Applie id under her profile successfully. After reloading the OS on my MAC I am unable to sign in even if my wife is not signed in or authorized the computer with her id. Feels like a waste. Message says, "This computer is already associated with an apple id"