Cloud Connector (on-prem to cloud) error when connecting HanaTrial

Hi,

I used the guidance as per the link https://sap.github.io/cloud-s4ext/week-4/unit-3/ to enable Cloud to on-premise. But, when I connect On-premise to cloud, getting an error message "Service Channel Could not be opened". Verified the port and it is correct. In the error logs, found following:

caused by:com.sap.core.connectivity.tunnel.core.handshake.tunnel handshake exception:invalid status of handshake response:401 unauthorized

My question is are we allowed to connect ABAP 7.52 --> SCC --> Hana Trial (neo)?

Also, when I add service channel, there are three types available and two seem to be relevant i.e. HANA Database and S4/Hana Cloud. Both are not working. If above scenario is allowed, which type is applicable?

Thank You!