Plans and billing
Your plan, its add-ons and paying for them, and what happens when an account is left without a plan.
When your account is left without a plan
Why an account whose subscription ended can end up with no plan at all and blocked instead of back on the free plan, and how to get it working again.
When your bank asks you to approve a payment
What the Confirm your payment window is, what happens when you approve or cancel it, and what to do with a payment that is still waiting.