I have a brand new Hisense Roku tv and it will not connect to wifi. I’ve done everything to fix it. Confirmed password, restarted router and tv, changed password and confirmed again, returned tv for a new one, used secret menus on remote.
Have you tried connecting your Roku TV to another wireless network, such as a mobile hotspot, to see if you are able to connect. If you are able to connect to an alternate wireless network, the issue is most likely with your home wireless network.