Your roku is still holding your home network settings and, I assume, the app device is connected to the current, local, network. Without the remote you won't be able to control the roku, unless you can modify the router where you are and mimic your home network settings.
Your roku is still holding your home network settings and, I assume, the app device is connected to the current, local, network. Without the remote you won't be able to control the roku, unless you can modify the router where you are and mimic your home network settings.