The support for the OPi Win board is still very much being developed. You're welcome to try the images out and see how they work, but they will probably change from day to day and there is no particular expectation that anything will work. If I remember correctly hdmi output isn't working for me either, but since I use it headless that's not a problem for me.
If you're expecting a more complete OS you'll need to give the devs more time and wait until a release is made in the "stable builds" group.
Pouria reacted to James Kingdon in Server and Desktop Ubuntu OPI Win issues