enterprise repository access

Hi, I have a subscription but when I try to update my server I get this error: Err:4 https://enterprise.proxmox.com/debian/pve buster InRelease 401 Unauthorized [IP: 2a01:7e0:0:424::249 443] Reading package lists... E: Failed to fetch...

Dear Friends/Support, I had been using the no subscription update repository for 1 week and ran apt-update-upgrade-dist-upgrade while using it. And now I chnaged to community subscription which entitles me to use enterprise repository, What are the commands and proceedures ,I should do acces...