Please note that the certificate renewal is automatic and the PBX will try to auto-renew the certificate every night. Did you receive an email that the renewal failed? If so did you get an error?
The certificate expired on August 11 and I detected when I tried to access to admin interface.
Our 3CX is only used from Monday to Friday from 8AM to 7PM, after hours the VM is shutdown on Azure.
How can I force to renew the certificate?