Everything was working perfectly for both my WiiU and 3DS as of last weekend but a few days ago I went to go to Miiverse when it had said that the internet wasn't connected. I went to the internet settings but for some reason my wifi name wouldn't show up in the list of available networks. I have tried a lot of the old solutions including a bunch of manual inputing and IP address configurations but it still refuses to connect, and today I noticed that my 3ds is now doing the same thing!
I know it's not the router and internet connection itself since not only does everything else (non nintendo) connect and work fine, but I even called my provider and tried to troubleshoot through them. I'm not sure what else to do at that point. Does anyone know what to do?