I've had zero success getting checked in for a flight tomorrow despite multiple calls to UA. Now this while trying to log into united.com:
! We could not process your request. Please see the message below and make revisions.
To sign in, please enter your MileagePlus number and Personal Identification Number and then click Sign In. You can also enter the username and password you may have created in the Account Settings area of My Account and then click Sign In.
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! Please contact the MileagePlus Service Center for assistance with your account.
I am beyond fed up with integration problems. Seriously.