So I've tried using a separate browser and it tells me my account is already bound to an itch io account but I dont know what my account on your service is. I was never prompted with making an account :/
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Please clear your browser cookies and try again. I've just confirmed that the itch.io registration is working as expected. If for some reason, you're still unable to register, contact us here and we'll help you out. https://www.adultvrgameroom.com/contact/