Questions like that should be asked in the comments or community of each game. If a game doesn't have either, at least link to it so people can tell which game you mean. Otherwise, this category is for questions about Itch.io itself. Thanks,
Edit: there are two games named Peppered. Presumably you mean this one, as the other is browser-based and free. I see the comments are open, and there's a troubleshooting section at the end of the description, too. Your best bet is to look there first.