The prometric centre from where I purchased the part II exam sent me a link after 4-5 days to my email address from which I was asked to download the assignment. I dont remember they giving me any voucher for part II except for a payment receipt. Ensure that you got the part II voucher only or not and get in touch with the prometric centre.
I have tried to download the assignment from certmanager. Looks like, I have to purchase the assignment in a different url and try to download. On selecting download assignment option, it gives me no rights currently available page. I have purchased a java voucher already. I want to use the same for downloading the assignment.