I am having exactly the same problem, it tells me my password is incorrect when I can see it in front of me. Tried resetting hub, no difference.
Try a reset using this exact method ...
DO NOT DO THIS if the password on the base of the Hub is not legible or missing.
Instructions for Hub 3
Disconnect all unneeded ethernet cables from the rear of the Hub.
With the Hub Powered on use a paperclip or similar (I use a mobile phone SIM Slot tool) and do a pinhole reset.
Depress the pinhole switch for a timed 60 seconds then release.
DO NOT reboot the hub but allow it 5 to 10 minutes for it to boot itself up.
Once a steady white and no other lights are illuminated check your system again.