Thank you for reaching out to the Community! What exactly is happening? For instance are you seeing error messages, or blank pages? Also, are you having this experience with an email campaign or the Facebook lead ad in your account? This is an important clarification to have as I can see you were able to successfully send email campaigns in your account. While on the other hand, your Facebook Lead Ad has not yet been published. In fact when I took a closer look I can see your Lead Ad has not yet been designed. We do suggest completing each section on your lead ad before clicking Publish.