BaronVendredi
If it matters at all, this was my solution (edited for brevity):
I do have some of those HDMI extension cables, and the streaming stick has never worked when I use a cable with it.
Fortunately I was able to get things up and running again. Basically I started all over. Powered everything down, unplugged it all, etc. After I manually entered my router info - voila, the Roku's channels worked again.
I am considering getting a box-type Roku (no stick) for the future because even though things are working now, that hot streaming stick still concerns me.
Update: I did end up buying a Roku Ultra so I could ditch that hot streaming stick. Yeah, I reluctantly threw more money at Roku. I wish they could send us replacement units or upgrades so we didn't have to deal with this stuff and spend the extra money!
I agree with your venting/remarks, and I hope your solution lasts...