1) Is your tv successfully connected to the internet? This is needed to stream anything.
2) Do you have a paid established account with Netflix? Vudu doesn't require a subscription but what you can stream for free (with ads) is limited.
- Roku Streaming Stick +, 3810X, Ser YH0059427035, wifi - Samsung UN55ES6100
- Roku Streaming Stick, 3600X, Ser 5S56D8240827, wifi - JVC EM37T
- TCL Roku TV 43S425/C107X, Ser X000001R60KV, wifi