Cannot get uno wifi set up with Cayenne

I think we should take a step back here and make sure we’re all discussing the same hardware:

Do you have and Arduino Uno with a Wifi 101 Shield
or is it the Arduino Uno WiFi board itself?

If it’s the latter, I would try to connect it like an ESP8266 rather than using that WiFi 101 sketch, since that board uses an ESP8266 for internet connectivity. We don’t have the ESP8266 in our Add Device GUI just yet, but plenty of people here are using them for projects. See this post for a primer on how to connect one.