I need more info about my subscription(s) and/or a billing history

• I'd like to learn more about different subscription plans
• My card or PayPal won’t work, what am I doing wrong and what can I do?
• I need an invoice
• I’ve tried making a payment, but when entering in my card details, my actions were blocked. What does this mean?
• Can I pay a subscription with crypto?
• My payment has not come through. How do I change my payment method?