Last year itch io had released this.
https://itch.io/t/2809361/will-adult-games-be-forced-into-direct-payments-instea...
What i understand , itch io is mentioned to the content . We thought the content of our game might found "harm". and in those days , the devs understood, some of the porn games are removed. But if you read the link, there is no understandable reason for this.
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Thank you