Apple TV4K 3rd generation use with HDMI Audio Extractor

I just bought a new Apple TV4K and wanted to extract the audio from the HDMI port so I tried an Orei 4K Audio Extractor (HDA-912) in the HDMI connection. When I look at the picture on my TV I only get snow. Note: The ATV4K video is only set to 720p.

If I remove the HDMI audio extractor everything works okay. The HDMI audio extractor works with my old ATV3.

I read somewhere that a HDMI extractor stopping working after a software update on ATV4K so suspect HDMI audio separators are not compatible for the ATV4K but I wondering if anyone else had any experience with this.