Apple TV not working on Roku tv

Another user (mygreensocks) suggested this procedure from Roku Support staff, which reportedly helped several users.

1. Remove the Apple TV app,

2. Shut off and unplug the TV (or streaming device),

3. Wait 30 seconds,

4. Plug the TV (or streaming device) back in,

5. Reload the Apple TV app.

Else try the Network Connection Reset, as mentioned by user Jarieta.

Thanks for posting in the Apple Support Communities Blue1727,

The steps found in the "Sign in on apps and other devices" section if the following pay may be useful: Sign in with your Apple ID

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Include information like what message or text you see with the error, as well as any steps you may have tried before reaching out.

Cheers!