Final update for others who might have this problem: It turns out that you cant use the Starlink router in its “as-shipped” configuration. Too many ports are blocked that cant be unblocked to allow the RS to work. The Starlink router has to be placed into “bypass mode” in order for it to work. That essentially disables everything in the Starlink router, even the firewall. You have to provide your own firewall. I purchased a small used Ubiquiti edge router off of ebay for that purpose.
The RS is now a happy camper.