Sorry you're having an error! What does it say, exactly?
As for the Steam version, that is not actually compatible with the Android version. Steam does not support mobile, so that version can only be obtained on itch.io.
Hello again, first of all, thank you for replying. Well, every time I try to make a purchase, it keeps showing "an error occurred while processing your payment, your card was declined" and I don't know how to solve this. Please, I would be very happy and grateful if you could help me, I really want to buy the DLC.🙏🥹❤️🩹