Late supplement information questionnaire? Please help!

I got this email on January 5th, but I just saw it as of today January 30th. Should I still take my time to fill it out or would it just hurt my chances for being late? Will not filling it out hurt me?

Thank you for your interest in UC Davis for fall 2016. Undergraduate Admissions is carefully reviewing your application. It would help us to receive additional information from you in order to make the best possible holistic review assessment of your application.

Please thoroughly complete the Supplemental Review Questionnaire

Be sure to include your fall 2015 grades and spring 2016 coursework-in-progress. It is important to submit the questionnaire with the requested information within ten calendar days of this email.

It also says

Although the deadline has passed, you may still submit this document. We cannot guarantee that it will be used in our review of your application.

Not filling it out will hurt your chances more than if it is late.

It’s 3 weeks late

Well then, get it in ASAP.