If you have an outbound firewall which does TLS/SNI inspection, it may be mis-configured and block connectivity to Agilicus services. You can see the domains required in Site Firewall Configuration.

You can run the network self test (agilicus-agent test) to check connectivity, it may show an error as below. This is showing that your site firewall is sending a TCP RESET (RST) packet when the connector tries to connect to its upstream. Please update the configuration of your firewall to allow the required domains.