Hello @elizabethg23 ,
The error is related to a problematic cookie that was fixed back on July 14, 2024. If you're still receiving it, I'd advise clearing your browser's cache and all cookies related to Constant Contact, then fully exit / task manager close your browser after those have been cleared. Then you should be able to login and schedule your email without the issue.
If the issue persists, or showed while performing a different task than when you were trying to schedule an email, I'd advise calling our general support for live troubleshooting and further assistance.
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