Replacing SRS to SCG, no error during installation, tried on both VMware & HyperV

Tried to access https://xxx:5700/SecureConnectGateway (xxx scg host) from other server with same subnet ip address but failed. Support ask me to register firewall port 5700 but there is no firewall within same segment or subnet.

Tried telnet localhost 5700 is success

Tried different browser latest firefox, edge and chrome.

I'm stuck here , what a hassle. TLS1.2!!!