Configure payment with the service to run your ad.
- Go to the Marketing section > Start tab > Promoted posts block.
 - Select either Facebook ads or Instagram ads.
 -  Scroll to the bottom of the page and click the Ad account button. 
Facebook and Instagram Ads in Marketing 
When you are in your account, follow these steps:
- Select Billing & payment in the left menu.
 - Click Payment settings.
 - Click Add Payment Method and enter your payment information.
How Meta charges for ads