The certificate for the appliance manager is updated in the same manner as the Web UI certficate.
Navigate to the appliance manager https://<FQDN OR IP>:4343 OR http://<FQDN OR IP>:4242 and navigate to Global Settings > Import HTTPS Certificate.
Upload the cert and key files and click on submit. The Web UI certificate will update automatically while the appliance manager certificate will need a VM restart to be applied.
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