Thank you for reaching out for help in the Community! We're sorry to hear the preview function did work properly and the button also didn't work in your email when it was live sent. We'd like research this issue on your account and see why it occurred so we can hopefully help you prevent it from happening in the future.
If you can, please an email to social_support(at)constantcontact(dot)com with your username, the name of the affected email campaign, and a reference to this post and we will look in to what caused this issue to occur for you.
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