Qwiklab account got suspended

Unable to log in to Qwiklabs after few attempts in Assignment of week 5. Got the error message “Your account has been suspended. If you believe this could be a mistake, please contact Qwiklabs support or your administrator.” tried to get help using the help link but to access the options I need to log in with credentials and I am not able to receive the log in credentials also from my course link. How to log in again in qwiklabs?

Please contact qwiklabs for help.