Commercial license
If you want to use WOW.js to develop commercial sites, themes, projects, and applications, the Commercial license is the appropriate license. With this option, your source code is kept proprietary. Purchase a WOW.js Commercial License at uplabs.com/posts/wow-js-commercial
Open source license
If you are creating an open source application under a license compatible with the GNU GPL license v3, you may use this project under the terms of the GPLv3.
Domyślam się że nie mogę jednak wstawić tych animacji chociaż nie wiem na jakiej zasadzie działa licencja GNU GPL license v3 ?