Unlike Deviantart and itch before, I receive some responses that the payment done in here (payhip) needs to be held by paypal. I also have no choice but to wait for paypal to assess the payment before the purchase is successfully processed (You cannot access the content before it is successfully purchased). So please be aware that you do not do the duplicate payment and you are advised to use deviantart and patreon better. Payhip could be the last option.