You are getting a CORS error:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://server.ip.address:38083/json_rpc. (Reason: CORS request did not succeed).
From the help:
How do you setup a node to communicate with other nodes only over an anonymous network?
Pretty much all of this is covered in ANONYMITY_NETWORKS.md.
Node to node communication, i.e. P2P traffic: for this you can use --tx-proxy ... and --add-peer ... / --add-exclusive-node ... with a node on an anonymity network to broadcast transactions only over the ...