Wipro — Background verification link is showing error and not opening

Wipro Background verification link is not working, even though they sent me another link, it is also not working.it almost 18 days iam trying but facing the same issue every time. It shows " The page you are requested was not found" When I clicked on go back to home it shows login using corporate button, but wipro didn't provide a login & password. There are only 2 days left for me to submit my documents. They sent me new links but iam facing the same issue again and again. Can any one solve this issue.