Is it a mistake you wrote November 2, 2019? Because all the notes show that it took place in January 2020, and the YCH listing shows it was posted November 5.
Either way, I really hope you'll be able to at least get your art or your money back 😕
Is the 180 days protection from PayPal up yet? If it is, you might still be able to call them and explain the situation and hopefully get PayPal to issue a refund because the lack of responses is not okay.