I have not seen this box in person but i believe it would have optical out....S/PDIF port is kind of outdated now.
Also this box does support Dolby Vision and lot other latest + older audio, video formats and picture resolutions/formats ....if ur TV / Equipment supports it then it will be listed under "supported formats" section else under "unsupported formats" section in Display/Audio Settings
Here r the images illustrating the same
U r right..I think u have Dolby vission in ur TV..
This device doesn't support Dolby vission and HDR 10+ ..only supporting HDR 10 and HLG formats...
The info page saying the same...I know how a device show's the unsupported formats..