If you are having trouble paying for a broadcast you could be running into one of two issues:
1.) Your browser is not agreeing with the payment process. Switch to a different browser and try again.
2.) Your anti-virus / security software (e.g. Kaspersky) may be blocking you from using our payment system. If you add stripe.com (if paying via credit card) to the "Safe Money" list (or other list of allowed sites) that may solve the issue.