I see no evidence that these items are compatible with Premiere Elements. Their support seems addressed to After Effects and Premiere Pro.
Have you contacted the developers of the web site making these offerings and asked them your question? That should give you a definitive answer.
Among other things, you need to know what format these items are in, including file extension.
Best always go the free tryout route of Premiere Elements from Adobe before making the purchase to verify that the program is compatible with your computer environment and has and supports features that you need.