Good evening Natalie and welcome back!
Thank you for reaching out to us.
We are sorry to hear about the admin interface and the additional attendee information not working properly on your site. I would love to help you with this topic.
I see that you are using Avada. Can you tell me what version you are using ?
Based on these symptoms, it sounds like you might have some template customization that needs updating.
This is usually found in either the <b>/tribe-events/</b> folder of your WordPress theme’s directory or in its <b>functions.php</b> file.
You can do a quick test to see if the problem persists while you temporarily revert back to a default WordPress theme such as twenty-sixteen.
Or you could simply temporarily rename the<b>/tribe-events/</b> folder of your WordPress theme’s directory to <b>/z_tribe-events/</b>
Consider activating a “Maintenance Page” plugin if you are doing this on your live site (to minimize impact on your visitors).
Let me know how that goes.
Best regards,
Geoff B.