Having no luck with the MN Cast playing audio from Home Assistant using slimproto integration

Hello, I love this thing. After doing the reinstall of the squeezelite firmware and doing the NVS import I’m able to use the MN Cast as a Bluetooth receiver beautifully, but on home assistant, slimproto shows it as an “unrecognized device” and will not allow anything to play on it. Is it not possible at this time to do so?