Hi there Mary. Thanks for reaching out, and for your purchase of the Eventbrite add-on. We appreciate your support.
Unfortunately having credit card payment options is not something available in the Eventbrite API, which means we can’t tap into it with our plugin. This will hopefully change as they modify their API down the road, but at this point you’ll have to take care of adding any credit card processing on the Eventbrite.com side once your entry has already been created.
Hope this helps and sorry I couldn’t offer up more in the short-term. If you have other questions or need anything else here please let me know.