MY android 11 box shows that my network is available but when I connect to it, I get the message "can't connect to..."
I created a hotspot on my phone and my android box will connect to the hotspot.
So I assume my router is blocking it.
Welcome to Android Central! I moved this to the Android TV forum for more specific traffic.
What's the brand and model name/number of the box? What 802.11 protocol is your wi-fi network running? If your wi-fi network is only 5 GHz, and the box only supports 2.4 GHz, that might be why it's only connecting to your phone hotspot.