Has anyone had trouble paying a deposit?

[mdm1]

I have been trying repeatedly for the past two weeks to pay my second deposit.  I know it isn't due until January 30, but I was trying to get it in in the 2013 tax year.  I didn't have any luck with that because no matter how many times I have tried to enter my code at the enrollment site, my confirmation code has been coming up as non-existant.  I contacted Ms. Roth and Ms. Collins about it, and Ms. Collins put my in touch with a technical support person.  He tried my code and said it was working, but every time I tried it after that it still didn't work.  I have been using several different computers, so I know it isn't an issue with the computer itself.  The first deposit worked just fine, so I don't know what the trouble is.  Has anyone else tried to pay a deposit recently, and if so did it work?