Hello @MadelineS40. I see that you reached out to our Support team about this error message and they were able to assist you. In case others come across this post, I'll share some information here.
This email was created using our new cross-platform editor. At this time, changes made to the footer, such as an organization address, aren't updating properly on the schedule page, causing the error to show up. Updates to the footer should be made on the scheduling page in order for them to save correctly. We've noted this as an issue with the editor and our product teams are aware of the extra steps needed.
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