"In addition to the requirements of subdivision (b), a consumer who accepts an automatic renewal or continuous service offer online shall be allowed to terminate the automatic renewal or continuous service exclusively online"
Now I know why some magazines won't let you subscribe online - they take your credit card details on paper so that you can only cancel by calling them. I would rather close my credit card than call.
CA passed a law in 2018 requiring companies that allow people to signup online to also allow them to cancel online https://leginfo.legislature.ca.gov/faces/billTextClient.xhtm...
"In addition to the requirements of subdivision (b), a consumer who accepts an automatic renewal or continuous service offer online shall be allowed to terminate the automatic renewal or continuous service exclusively online"