Since the smart hub firmware updated earlier this month my Harmon Kardon citation 100 speaker will no longer function on wifi and I cannot set it back up with the google home app as the devices cannot communicate. I suspect this is the same problem as the known Sonos issue. Also my HP wifi printer will not print anything i try to send to it anymore. I’ve tried disabling 5ghz to no avail. Fingers crossed there is a firmware update released soon for the smart hub!
