How do I request the additional 3 months free to my Creative Cloud that is offered due to COVID_19?

Adobe is providing "free" access to its Creative Cloud apps only if you are in education as a teacher or student. For institutions that give students access to Creative Cloud apps through on-campus computer labs, Adobe is enabling those students to work remotely for 60 days through a temporary "at home" access. This has to be set up through the school.

https://helpx.adobe.com/enterprise/kb/covid-19-education-labs.html

Adobe is also providing free 90-day trials/access to Connect, which is their web conferencing service. This is available to individuals and businesses and educational institutions. The trial limits the number of people who can participate in a web conference.

https://www.adobe.com/products/adobeconnect/trial.html

Be very careful to read the license agreements and any information on terms before accepting the license. It is your responsibility to cancel the trial before it ends if you do not intend to subscribe. Adobe automatically starts billing you once the trial ends, and Adobe also automatically rolls subscriptions over each year. Most subscription plans have an introductory pricing that is only good for the first year; the price will increase after the end of that year..

Please see the last reply here:
https://community.adobe.com/t5/get-started/covid-19-and-subscription-payments-locked/m-p/11013675?page=2#M460937