<In order to make an advertisement campaign in cafebazaar, you need to charge your account. To do so, first go to finance section of advertisement menu. 

In this page developers can observe their account balance or buy new credit. The rest of the page shows a history of your transactions. To buy new credit click on “charge credit” button. You will face a new window such as following.

 

 

In this window you can choose any amount you want and then click on “Go to payment portal” to direct to Bank page. After buying the credit you wanted, you can start using this service.