AppleCare

Was this a used computer? Is the college an authorized Apple dealer? If they are not an authorized dealer then you may just have bought a re-sold computer which would be considered "used" by Apple and the 60 day AppleCare purchase window is past.

If you think the above does not apply:

Click on this link to read how to 'Update your proof of purchase' --> https://support.apple.com/HT202703

To update your information contact Apple Support by phone. Tell the advisor that you need help with your Apple Limited Warranty or AppleCare plan expiration date.

Here’s what you need when you call:

- Your AppleCare agreement number

- The device serial number

- Your sales receipt

The only reasons I can think of are:

• AFAIK, colleges are not Authorized Apple Resellers
• The serial number is associated with a device that is owned by your college.
• The serial number is not correct.

Regardless, see if any of the following article can help:

• Update your proof of purchase - Apple Support

Just to make sure: you bought the device yesterday? Or you bought the Applecare? How did you buy that? Unless you are located in certain countries, Applecare is not sold separately in a box with a registration number any longer - so how did you buy it? And, when you do buy it, it is automatically registered with Apple.