Not sure, so long as it wasn't a free / pay what you want / browser game I assume it's a matter of either waiting to see if the game is noticed or trying to contact Itch.io themselves to be added.
It's so weird, everything else on the same page as my submission was added. I reached out to leafo on twitter but haven't heard back.
Best of luck then ; w ;
It never was added, never got a response. I'm so confused.
Perhaps try contacting Itch.io over twitter?
