You may need to purchase additional SMS or MMS credits to send a campaign.
Press the Purchase Credits button from the Orange menu
In the new browser window that opens, enter the amount of additional credits you'd like to purchase. You'll need to enter an amount at least to cover the amount of SMS or MMS you wish to send for your current campaign. If you have a voucher code, please see this guide.
Confirm the amount and enter your payment method, then press the green Pay Now button.