Yes. No attribution required.
Yes, but you need to buy an extended license of the resources you want to use.
You won’t need an extended license until you update your product. If you release an update version of the product, and it still includes our resource, then you’ll need to buy an extended license.
No. If you want to share one of our resources, then link to the resource on CodyHouse. Don’t link directly to ZIP files, link to the article instead.