stripe does not allow adult content. here is from their website

Adult Content Adult content is legal where I am selling it, why can’t I use Stripe?

We understand that your business may be legal, but for now, due to various reasons including requirements that apply to Stripe as a payment processor, requirements from our financial partners, and the potential risk exposure to Stripe, we're currently not able to work with businesses that sell or offer adult content or services.

Stop saying things only for the sake of saying things. Onlyfans is not a payment processor