AFTER accessing my Wi-Fi, my Roku 3 can't find "MY NETWORK".

My Roku 3 worked great for a couple months, but eventually it "froze up", so I had to power-down and restart it. Now, when it starts up, the first thing it does is search for my home Wi-Fi ....WHICH IT FINDS AND CONNECTS WITH.

BUT THEN it starts searching for "my home network"....which I can't understand, because:

(1) it never did this step in the past, and

(2) if it is already connected to my Wi-Fi, then it ALREADY IS connected to my home network.... ISN'T IT ??

In any event, after searching for "my home network" for a bit, I am told that "it can't find it", and the whole start-up fails, and I just have to repeat the steps I just described .... and I obtain the same exact unsatisfactory result.

I just keep "going in circles".