primary server's certificate expired

Hi All

     I have a ZCM 2020.2 lab which has 2 primary servers.

but I find a primary server's certificate has expired (2023 Sep)

I know we should renew before expired...

But I just ask if meet certificate expired, whether I have any chance to renew it  ??

I try download certificate update package from https://firstprimaryserver/zenwork-setup ...

But install stuck when run zac cl

Do I have chance ?

Wencheng