Key Takeaways
Chargeback. Tell your credit card company the truth, you can't login to cancel substack payments, and let your credit card company deal with them.
If you used paypal, they already allow you to cancel recurring payments from paypal's website, without going through the payee at all.
Maybe substack has been lazy in implementing this, or maybe the guidance the were getting as the deadline approached was conflicting. They may have it fixed soon. They may even determine that payments associated with the account indicate over-16 and they don't need to lock you out at all. Or, getting hit with a lot of chargebacks will motivate them to have a separate login flow to cancel billing even if they can't let you read what you paid for. You can't be the only person frustrated at being locked out while they're still billing you.
Not affiliated with Hacker News or Y Combinator. We simply enrich the public API with analytics.