Hey Deirdre,
Sorry to hear you’re having some issues – can you clarify exactly which fields you’re referring to when you mention “Additional Information Fields”?
I’d recommend reading this article in full: https://theeventscalendar.com/knowledgebase/pro-additional-fields/
Be sure that you’re doing each step there accurately.
If you’re sure that you’re doing each step 100% accurately and still have issues, then can you proceed with clarifying each of these details:
1. What version of The Events Calendar is active on your site?
2. What version of Events Calendar Pro is active on your site?
3. What is a URL to a specific event on your site that you tried adding additional fields to?
4. Do any of your problems still persist if you deactivate ALL plugins on your site, except for just The Events Calendar and Events Calendar Pro themselves of course?
Thank you!
George