Sorry for the inconvenience....
Yes, RPGMaker MV does have the ability to create the game for Mac and Linux. Although, they created several new bugs I had yet able to dismantle (from when I tried on a friend's mac) so far, the game turned unplayable in these. That's why I focused on Windows first before jumping into other OS. I am still planning on releasing LI to Mac and Linux with different release dates.
About the refund, I will be contacting you in near future via PM. :)
May the stars bless your path.