Can only connect to ipv6 address of a node and not its ipv4

I have 5 nodes on my network. They are connected and have been assigned both ipv6 and ipv4 addresses. I can connect to ipv4 addresses of all the nodes except the one named Rutxchase 2. For this one only its ipv6 address works. This is quite unfortunate because it means i also can’t access the lan network of this router. It is worth noting that this router is on a starlink connection whereas the other Rutx is on a 5g. any ideas? Or failing this i could create a managed route rule using the ipv6 address of the Rutxchase2 but this isn’t an option in the managed routes tab … only ipv4 routes are allowed.

Thanks !