Panasonic DB-9000 Ultra Blueray Player

I bought Panasonic DB-9000 Blueray player knowing from the spec sheet saying it support Dolby Atoms & DTS master HD. When i hook up the player via hdmi to my Marantz AV8805 processor, I play a 4k 2160p MKV files with dolby atmos or DTS HD and the player say audio files is NOT SUPPORTED. Anyone has any ideas? please help