Cognizant — Onboarding issue - WebEx link not received

Address: Bangalore

My official DOJ is Dec 1, 2021 but I haven't received onboarding pass stating that BGV process not completed. It got completed on Dec 1st and I received the onboarding pass in the late night. But it's been mentioned in the pass that it's valid only on 01/12/2021 but I have received it only when the day is actually ended. Also, I haven't received any WebEx link yet to Join virtually. I have dropped a mail on the same to my recruiter and onboarding team ([protected]@cognizant.com). But I didn't get a response yet. Please let me know how to move forward.