In order to use all the Plivo services without interruption, you need to upgrade your account to standard. You could do so by doing a minimum recharge of $25 once you have added and verified your card.


You could refer to the below link for the card verification:

https://support.plivo.com/solution/articles/17000044499-how-do-i-verify-my-credit-card-


Also, please check the below link for the available payment options at Plivo:

https://support.plivo.com/solution/articles/17000012001-what-are-the-available-payment-options-to-make-payments-at-plivo-


In case of further assistance, please contact the support team