What should I do?
Ignore the indexing status of your game and promote it as you would have promoted it.
There is 60000+ horror games on Itch. Being indexed or not is not gonna make much difference without ouside promotion. And a link to your game does not care, if the game is indexed.
It can take over a month. Does it suck? Yes. Will it get faster if you complain? Why should it. Everyone else is waiting too.
More infos here https://itch.io/t/4120453/game-quarantined-search-or-indexing-problem-read-this