While editing your email you have probably deleted the Seatrobot macros. Macros are like merge fields - they represent content from outside the email, (like a recipient's name) and insert it, email by email, as the emails go out. In the Seatrobot email editor, they appear like little colored bubbles with the info they represent written inside.
While editing an invite email, you can re-insert any of the macros by positioning your cursor where you want a piece of information to appear, then choosing the appropriate macro from one of the dropdowns on the right of the edit bar. They are grouped by type: Seating Package Fields, Buttons & Links, Event Fields, 3rd Party Fields, and Guest Fields.
Tip! There are macros to represent all the different bits of event info you added during event setup, like Venue Name, Start Time, etc. It's a good habit to use macros to place this info into your emails rather than re-typing the actual details long form. This way, if you change any of your event info later, all your emails will automatically update with the new correct information.
Note: Actions which will prevent macros from working correctly:
1. You cannot copy and paste macros from the body of one of your emails into another email in another event.
2. You cannot copy macros from an Invite and paste them into a Custom Email, or vice versa.
3. You cannot copy text and macro images from a test email you have received back into an email you are editing.
For best results, always add fresh macros to the email body in the editor each time you create any type of email - or use the macros that are already in place in the default email templates.