Hi, In the past, Ads could run with voucher only, without add Credit Card or Virtual Credit Card. But nowadays, seems google banned all account with voucher only. I don't know it's happen in all country or not, but mostly as far I know it's happen in South Asia. Is it still possible to run ads with vouchers only (cheap cost !) Please tell me your opinion, and if voucher only still work in your country, please post here or PM me....
some asian country billings have been restricted from using promotional codes because of huge abuse in adwords those who fund accounts never face problem