For your Shiptheory subscription payments, you'll need to pay with a card. As, currently, no other methods of payment are supported.
Upon selecting a subscription for the first time, you'll be prompted to enter your card details. Or, alternatively, if you're already a paying customer and would like to update your payment card, you can do that here.
The following are the accepted card types for paying: Visa, Mastercard or American Express
If you encounter any unexpected issues during this process that we can help with, please feel free to contact support.