If you redeem a voucher in your swype account, you will receive swype credit on that account. You can use the respective credit balance for all numbers that have been added to this account.
Please note the following:
If a tariff that has been activated on a number is renewed, the amount due will automatically be deducted from your available swype credit. This means that if you have available credit, you cannot choose which of the tariff renewals or activations is paid for with the credit and/or with the payment method stored in the swype app.