I had my hub4 for 2 days before going back to the hub 3. I have my q box and a mini wired to the router which worked fine on the hub3. That worked all well until I installed the Hub4, with that, it just lost the connection repeatedly saying cannot see Q box or Router (even though wired in), so clearly something in the H4 blocking the Q. It just wouldn’t support the connection between the two wired Q boxes. That’s just shocking!
on a more strange note, I have configured my H4 as an Access point and connecting via Ethernet to the SH3 which is now my main router, I’ve done so by disabling dhcp and the firewall settings. Funnily enough it now allows the SkyQ Mini to talk to the main Q box. (It’s being used as an AP with Ethernet ports of which one is connected to the Q mini)