Thanks for reaching out. Please take note that although there are Soundbar brands that can be set up for Chromecast with Google TV however, not pairable/compatible with the Voice Remote.
As a workaround, you may try to choose a different brand from the list, which in your view has the same country of manufacture as the TV. You may also search for TV remote codes online and see if any other brand matches the same code as iFrogz, and select that other brand instead. However, please be informed that this step may or may not work.
I haven't heard from you so I’ll be locking this thread after 24 hours. If you need help in the future, please feel free to start a new thread and we'll be happy to help.