avast a/v free reactivation

my free a/v license expires in 6 days. how do I reactivate it for another FREE year? as a rule I do NOT use paid products. free versions will suffice. do I download and reinstall? request a new FREE license? how? avast apparently does not have a contact us form. this is my only way of asking this question. please send replies to rtrg@mail.com. if I cannot get another free year I will go alsewhere. thanks.

https://support.avast.com/article/Activate-Free-Antivirus