You will need to go into your wifi router set up and see if it will reveal the network name (SSID) and password to you. If not, you'll most likely have to reset it to a new SSID and password. If your router is provided by your internet provider and you don't know how to do this, you may need to get help from your internet provider.
If you reset your SSID and password, you'll have to reset your Roku and all your other devices to use these new connection parameters.
- 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