Hi Steph,
Our non-profit program is indeed still available!
If you previously received a license key, can you email us and include your license key in the email? We might be able to simply renew it. Our email address is:
support [at] theeventscalendar [dot] com
Alternatively, depending on when you last applied, it may be that you never received a license key and were only provided with zip files. If that was the case, it may be you need to re-apply (allowing us to provide you with a new key and automated updates if your application is successful).
Thanks!