Hi Janice!
Thanks for getting in touch with us. Let me help you with this topic.
Could you please try going to WooCommerce > Settings > Products > Inventory and make sure that the Stock Management is enabled? Does it work as expected after that?
If it doesn’t, please go to the edit event page for that specific event and in the ticket editor, click the “settings” button. Please share a screenshot of the ticket settings so we can have as reference.
Additionally, please share with us your system information by following this guide > https://theeventscalendar.com/knowledgebase/sharing-sys-info/. We’ll see if there is anything strange that would indicate an error from there.
Thanks,
Victor