Roku's "voice remote" and "simple remote" both fall into ... If it is a hardware issue, you can contact Roku for a fix or replacement — provided your device is still under warranty.
And while your Roku player comes with a small remote control that almost always automatically works properly right out of the box, there are situations in which that might not be the case.
PLEASE NOTE that this connects to the Roku via IP address, which needs to be added to the code before you flash it to the ESP32. This code was developed for an ESP32-WROOM-32 board in the Arduino IDE.