From 30-Nov I have placed an order "Databricks Certification: Fully Sponsored" on https://communitydatabricks.mybrightsites.com/ and after waiting 10 bussiness days. I still not receive that voucher.
@ramravi first redeem the vouche by schefuling one exam whih you wish to take. The date mentioned was only for redeeming the voucher not for taking any exam on or before that. You can even postpone the exam by re-scheduling it. So no worries