You can make payments according to your convenience and change the payment method for the following month. You can go to the profile page, settings, and select billing.
Next, you will see the packages that are currently running (active), and you can select them. Later you will be directed to the payment page to choose a package and duration.
Once your booking has been confirmed, you will be redirected to the payment page, where you can choose your preferred method and complete your payment.
Make sure the payment method you have is in your own name. You are also responsible for your transactions, including the source/origin of the funds used. Unfortunately, according to the rules, payments that have been made are non-refundable.