In order to use Ads Manager, you'll have to have a valid credit card on file with Facebook. This is because the cost of your ad campaign is billed directly from Facebook; there is no additional cost from PSAI.
If you'd like to change the credit card billed by Facebook, please follow the instructions below. (If you want to change the credit card billed by PSAI, follow these instructions.)
1. Go to Your Billing Page
Click "Account" from the left-hand nav bar and then click "Billing."
2. Click "Facebook Ad Account Billing"
The Billing page will show all credit cards you have on file. Find the one marked "Facebook Ad Account Billing," and click on it.
3. Update in Facebook
Clicking this account on your PSAI Billing page will open your Facebook Ad Settings in a new tab of your internet browser.
From here, click "Payment Settings" to update the credit or debit card on file with Facebook.
Simply follow Facebook's instructions and screens to complete the process.
If you prefer, you can also update your Facebook billing directly through Facebook. Learn more from Facebook's Help Desk: