ok but you sad "you can use Gaia to create your terrain in Unity, but you must delete Gaia out of your project when uploading the source."
so how can i delete it from the source?
At this point I recommend just uploading whatever is needed to open your game in Unity when you submit to the jam. During my source verification check I will let you know if you need to remove any paid assets from your project.
ok thanks for all your help