I loaded my credit card with "prepay billing" method , then I inserted a 50$ copoun, but now i'm not able to start a campiagn . The total debits table shows my current balance is still 50$. When i'm tryiong to open a campign the following error is showed :"Your adwards payments through the prepay billing method are already used" What's the problem? What am i supposed to do? I sent a message in thier techniqual support but no answer so far.... Edit (error): Your AdWords prepaid funds have been exhausted. We have stopped running your ads until you transfer additional funds into your AdWords account. Please visit your Make Payments page to fund your account and trigger our system to begin serving your ads again. If you need to update your payment details before attempting another payment, please visit your Billing Preferences page. Thanks in advance