alzhao
5
Why do you use port 22? It is for ssh.
For wireguard it is 51820, use this for both external port and internet port.
Also you need to state what is the IP of your main router and AR750. You cannot have both 192.168.8.x. I am not clear which router is 192.168.8.169.
Also one important thing, the Wireguard APP on iphone is not good because it does not display the connection status. When you enable Wireguard it always show connected. But it is not connected at all.