To run a campaign you need to either prepay (have account balance available) or have a payment method on file for billing.
Standard Payments
When you set up a campaign, you put a credit card on file for us to bill to. When you submit your campaign, we place an authorization hold for your first day of potential campaign spend on that card. A portion of this hold, equal to your actual final spend for the day, will be captured after your first day of spend.
After your first successful payment, the Blip billing system will progressively back off of how frequently you are billed. As you build "trust" with successful payments, it will move from billing daily to billing you once every 3-5 days of active spend.
Prepayments
You can always prepay credit on your account. Blip will use the credit that you add to your organization to run your ads.
Once the prepaid credit has been spent, you will continue to be billed via your card on file as your ads run.
How to stop spending
If you would like to stop spending, be sure to disable your campaigns.