Create a DHCP reservation on your router for the hub (ensure the ip and MAC)
Press the network reset button on the bottom of the hub with a toothpic or paper clip for 7 seconds. It will be the only round hole out of all the square ones.
Wait till light is green again.
From a web browser on your pc, Go to the IP you reserved in your DHCP table.
See how it is after that.
I'll put a big caveat in that I'm no network engineer.... But you don't have any weird and wonderful setup on the network, like a separate subnet for IoT devices and alike? Could there be some kind of firewall rule blocking comm's between your PC and the HE hub?