Are you seeing this notification in your WordPress Dashboard?

Event Tickets does not support ticket sales via third party e-commerce plugins. If you want to sell tickets with WooCommerce, please purchase a license for Event Tickets Plus.
This notification appears when you activate the free Event Ticket plugin AND WooCommerce.
This message is flagging that the Event Tickets Plus plugin is required in order to use the third-party e-commerce plugin to sell tickets. You can still sell tickets with just the Event Tickets plugin and Tickets Commerce, but without Event Tickets Plus, you cannot sell tickets with another e-commerce platform. Let’s dive into what that means a bit more!
A common question we get at The Events Calendar is about the difference between Tickets Commerce and using Event Tickets Plus to integrate with a third-party e-commerce Platform (most commonly WooCommerce).
Tickets Commerce is the lightweight e-commerce platform built into the free Event Tickets plugin. If you have Event Tickets Plus, you have the option to integrate with WooCommerce instead.
Tickets Commerce is limited to PayPal and/or Stripe payment gateways, whereas WooCommerce allows you to use many different payment gateways.
Additionally, WooCommerce is more robust in the sense that you have more control over managing the ticket and attendee data. For example, WooCommerce allows you to adjust the Order Status for an attendee, while Tickets Commerce does not have this functionality.
Want to switch to WooCommerce? Our helpful guide, Switching from Tickets Commerce to WooCommerce walks you through the process.
In summary, upgrading to Event Tickets Plus allows you to integrate with e-commerce platforms beyond Tickets Commerce. It also is worth mentioning that Event Tickets Plus allows you to collect Attendee Information from your event attendees, and share stock between tickets on the same event; more helpful features that make the upgrade worth it!