ARC won't connect

Roon Core Machine

Mac Studio, Apple Silicon Pro, 32GB Client
Mac Mini, 3.2 GHz 6-Core Intel Core i7, 32GB Core

Networking Gear & Setup Details

Huawei HG8245Q2 router, Linksys dumb switch, all connected via ethernet

Connected Audio Devices

Number of Tracks in Library

Description of Issue

Roon ARC shows upnp_autoconfig as true but still unable to connect.

“connectivity”: {“status”:“NetworkError”,“status_code”:504,“error”:“error: Error: ETIMEDOUT, response code: undefined, body: undefined connected? undefined”},
“external_ip”: {“actual_external_ip”:“”,“router_external_ip”:“”},
“status”: “status”: MultipleNatFound
“natpmp_autoconfig”: {“status”:“NotFound”},
“upnp_autoconfig”: {“server_ip”:“”,“found_upnp”:true}

Can anyone please assist me?

Thank you.