CMU MCDS: is there a confirmation for acceptance of the offer?

[AYZ]

Hi,

I received an offer from CMU MCDS program in February and have decided to go. I submitted my decision via the online system but did not get any confirmation other than the sentence on the website: "Thank you, your information has been submitted.". I waited for three days and have not received any further instruction about paying the deposit and other pre-enrollment stuff. 

Did anyone apply to MCDS or other CS program at CMU and got admitted? Do they send out confirmation and next steps right away? (I think I'm a little bit paranoid thinking about the incident where they sent out wrong offer letters years ago)

Thank you guys!!!!