GotoWebinar just suddenly stopped registering people

As standard, GotoWebinar API only accepts 500 daily registrations (resets after 24 hours). After that it will stop registering participants but will still send empty confirmation emails to every registration attempts made. Unfortunately this is not something that Optimizepress has any control over.

To fix this, you need to send an e-mail to developer-support@citrixonline.com with the consumer secret of your app and ask them to remove the limitation.