Looking on thread
Start9 Node not Reachable by Network. TP-Link AX1500 Router problem?, it seems you need additional router (which have port forwarding feature) and certain Starlink plan which doesn't use CGNAT.
Has anyone used VPN or tunneling solutions to work around this limitation with Starlink? If so, which one worked best?
No, but these days there aren't many VPN provider that have port forwarding feature.