I managed to to get through to PayPal using my mom's number who has not been in good health from Long Covid.
It appears that you can only cancel using PayPal, a horrible third party service, to pay for lesson plans taken from at least some creators without their permission.
Why would a website rely on a third-party service difficult to set up in Korea, as regularly comes up in threads, forcing people to rely on phone numbers from their home countries?
And, yes, I am aware I am paid for this website even after it sold other people's materials apparently without asking them. Last minute assignments sometimes force you to grab materials quickly, but I am still complicit.
You can scan the QR codes below for the most regularly mentioned resources so you are not directly to spam.org.
Might be a good idea for anyone to put QR codes in their signatures if you are so inclined. Most people use a work computer and a phone at the same time.