Filmora subscription and Filmora Creative Assets subscription are two different subscription plans that need to be purchased separately.
Filmora subscription is for the program itself, which means you could use the license to edit the project and export it without watermarks.
However, Filmora has some premium resources with pink diamonds that need to be paid for separately, such as adding additional effects and resources (title/audio/music/transitions, etc.) to your projects. That is what the Filmora Creative Assets subscription includes.
If you have purchased the full Filmora Creative Assets subscription, then you can download and use corresponding paid resources.