Solved! Go to Solution.
Try the usual fixes for the home hub, in this order.
factory reset the home hub.
Then turn Smart Setup off.
Then separate and rename the SSIDs.
As well as the info that Keith has posted, you should "forget" the wireless connection on your devices then re-start the device before trying to re-make the connection using the wireless passkey/password, not the admin password, that is on the hubs label.
The factory reset worked, thank you.do I still need to do the other two steps??
Its best to disable smart setup, as that can cause problems.
Renaming the SSIDs is a good idea if you have any Apple devices.