Is artwork that I paid for in my Prezi able to be reused in a public Prezi?

I have purchased the rights to use several pieces of art in my Prezis. I have a free account, which means that my Prezis by default are re-usable. I think I’m right in assuming that others can then re-use the same art essentially for free. Can you please corroborate that? If so, I will change my settings to not be sharable, but viewable by others.

Is artwork that I paid for in my Prezi able to be reused in a public Prezi?._

I have purchased the rights to use several pieces of art in my Prezis. I have a free account, which means that my Prezis by default are re-usable. I think I’m right in assuming that others can then re-use the same art essentially for free. Can you please corroborate that? If so, I will change my settings to not be sharable, but viewable by others.