even I have not received any exam email that is schedule for Thursday at 3 PM EST

If you did not receive a confirmation email with a Zoom link, it means you did not actually "confirm" the time slot. Please follow the instructions listed in our FAQ to schedule your exam: https://community.aviatrix.com/t/h7hxfw4

Just attend the zoom meeting using the link in your exam confirmation email. The Aviatrix team will walk you through how you can get the exam link.

Good Luck,