I did already emailed itchio support with this, but I haven't got a response yet and wonder if other itchio users know how to fix this. I have set a sale for two of my games, and the bundle is working if people want to pay for both games with the discount. (https://itch.io/s/27181/chinese-new-year-sale) However, if I go to the pages of the individual games, the sale is just not there. I have set up sales before and I have never had this problem. I suspect it may have to do with me changing the dates of the sale after it was published.