I've been using TM with Archicad for years. I just downloaded an updated version and it's called "Community" and puts a watermark on my renderings. What do I have to do to have a full commercial...

I’ve been using TM with Archicad for years. I just downloaded an updated version and it’s called “Community” and puts a watermark on my renderings. What do I have to do to have a full commercial license?