I have found a *partial* workaround. By turning off the Device Filtering (setting it to "Allow All"), I was able to enter the remaining device entries. But then when I re-enable the filtering, it just hangs again, just like before.
Hitron CODA 4582U UI hangs when adding MAC addresses (Managed Devices)
I have just upgraded to Ignite Gigabit, so have just deployed the Hitron CODA 4582U modem/router. Previously I had been using a pure modem (don't remember the make or model, bu...