Hi Emma,
Thanks for reaching out–happy to hear that you’re enjoying Events Calendar PRO so far! 🙂 Unfortunately, our nonprofit partnership program only provides free licensing for either Events Calendar PRO or Event Tickets Plus to accepted organizations. You’ll find a coupon code in your original acceptance email that can be applied towards the purchase of any additional needed plugins, such as Event Aggregator. Let us know if you’re unable to find this email in your records, and we’ll be glad to resend it.
Thanks again, and please don’t hesitate to follow up if you should have any other questions!