Not able to access lab with Udemy Coupon code

I have enrolled with Udemy credentials and started learning CKA source, meanwhile, new contents added. But When I was trying to complete it, the labs are not accessible.

Please help me out with the same

Thanks.

Hello, @srinivasulu
Please read the descriptions.
https://www.udemy.com/course/certified-kubernetes-administrator-with-practice-tests/learn/lecture/16488034#notes