It's not reading properly in the pic. Basically, it says:
"You are connected to a wireless router in an incompatible mode.
Please reconnect your wireless router in a compatible mode and rescan for wireless displays.
Compatible wireless router modes include Wi-Fi 802.11b/g/n at 2.4GHz and 802.11a/n at 5GHz non-DFS (Dynamic Frequency Selection) channels.
Incompatible modes include Wi-Fi 802.11a/n at 5GHz DFS (Dynamic Frequency Selection) channels."
I'm trying to connect to 5GHz channel.