Solved! Go to Solution.
Its not clear what password you are trying to reset, the admin password or the wifi password. To reset both, press the recessed button in the rear of the hub with a paperclip for about 20 seconds until the lights flash.
if you have the admin password then you can connect to hub with ethernet and then change the wireless password - just another option
you don't need to be connected to internet to do this - just power up the hub