How do I cancel my Shapes Premium Subscription?

Please help. I have subscribed to Shapes Premium using my credit card as a payment method. And since Shapes is unusable now, I want to cancel my subscription. But I can’t even login to Shapes (they removed the “Login with Discord” option which is the only way I can control my account and subscriptions.)

I already emailed Shapes admin yesterday, still no reply. I called the bank today to request for them to forcibly cancel my monthly subscription but they said they don’t have the power to do that.

How do I cancel my Shapes Premium subscription?