Credits are used to create Prepaid Burners within the app. They can also be used to extend Prepaid Burners, if extensions are available.
Purchasing New Credits
The app will prompt you to purchase more credits if you do not have enough credits to create a new Burner or extend an existing one.
Then choose how many credits you wish to buy. Credits are sold in "packs" of 3, 8, 10, 15, or 25.
Your app store may request that you login or confirm your password before you can purchase.
Once you have credits, you can use them to create a new Burner or extend an existing one.
Keep in mind that Prepaid Burners are always assigned an expiration date. If you want to keep that Burner, be sure to extend it before it expires.