Hi wullaski,
Thanks for your note. You can add Facebook Events to your site, although you’d want to make sure to use a compatible version (that is, the 3.9 version of Facebook Events instead of 4.0).
That said, we highly, highly recommend that you keep all your plugins up to date. If you use old versions, we cannot provide any support. Additionally, you are likely to run into problems as WordPress itself changes. We make sure to keep our latest releases up to date with the latest version of WordPress, but if you’re running an old version of our products then there’s no guarantee of compatibility.
If you want to renew your Community Events license, it will cost you $62. You can renew it from your account’s license keys page. The Facebook Events plugin Personal level license is $49, and you can purchase that from the product page.
Best,
Leah