Your project is set to “$0 or donate”. Adult NSFW projects that accept payments, including optional donations, aren’t eligible for indexing at this time. To make it eligible, change pricing to “No payments” and save. You can learn more about our indexing requirements here: https://itch.io/docs/creators/getting-indexed
More on the current restrictions: https://itch.io/t/5149036/reindexing-adult-nsfw-content