Hi @JasonGael,
Welcome, and thanks for reaching out here at the Roku Community!
A functioning remote is necessary for the initial setup of Roku TVs and devices. Please be advised that the remotes supplied by the manufacturers of Roku TVs are unique and operate by using infrared (IR) signals, so they should only work when pointed at the TV. For this, we would recommend purchasing a functioning, simple Roku remote for your TV. You can browse for a compatible Roku remote here.
Additionally, our Roku app remote feature would work as an alternative only if the device had been set up on the same network as yours. This will not be possible without going through the process of initializing your device.
For further clarifications or inquiries, please let us know.
Sincerest thanks,
Janadee
Nadee K.
Roku Community Moderator