License question about an add-on.

So I downloaded the “Swirls & Strokes Brushes Set” to use on graphics I will be making for my company, I was looking at the license terms and it is a little confusing to me.

First off, I believe this is an add on correct?

Second, we have a couple graphic designers in the company. Me and another employee, we share and use the same assets to make graphics. After reading the licensing terms, it seems that we can’t both use the brushstrokes, only one of us, is that correct?

And third, correct me if I am wrong, once you download an add on you do not need to go and continually re-register the brushstrokes for a new project each time I use it again right?