How do I connect my roku sound bar to my mobile app if I don’t have my remote, and the sound bar isn’t popping up?
Thanks for posting in the Roku Community!
You'll need the actual remote to connect your Roku device to your wireless network. The Roku mobile app will not work since it needs to be connected to the same network as the Roku device, which is not currently connected to your network.
You can follow this link to help you further How do I install the Roku® mobile app? | Official Roku Support
If you need a new remote, we have you covered here: https://www.roku.com/accessories/remotes
Please let us know if there's anything else we can help you with.