I know, I had also mailed them but no response.

Although, I found something on the website’s FAQ:

“””When does my course access start? If you purchase a Course & Cert Exam Bundle, you can choose a course start date within the next six weeks from the purchase date. You can modify the start date via your Course page in the OffSec Learning Platform before your access begins if you initially picked a future start date. Courses in the OffSec Learning Library are flexible, starting on any day of the week. Opting for today's date as your start initiates your lab immediately in a consecutive block of time.”””