As far as I know, we can't do any internet access without Smart Hub. That is we get connected to the network, then set up the Smart Hub account and finally we can get to the apps and more.
Smart Hub is integral to Samsung's design so I'd like to hear more how or why you are trying to get around that.
But about the network password. There are some passwords that will fail. I don't want you to post it here but keep it alphanumeric and not that long. Also, you should share the distance to the router since these are good for half the distance you get with a laptop.
I correctly put in the network password for wifi same as is on laptop and other devices that work - fails on Samsung Smart Tv everytime. I tried restarting the tv, restarting the router, accessing the network settings through different ways and retrying repeatedly. I can successfully access Comcast Cable Box Tv through the smart tv for regular viewing (wired in) but not the router (wifi alone). I needed to access the internet separately from the Smart Hub to get to apps to install for Amazon, Redbox etc. I don't understand how it can obviously be working and also not be working at the same time. How do I fix this? Thanks!