I am not sure I completely follow this, I have been using 2.0.2 for months now (maybe even a year) and just thought to do a check for update and there was one. I downloaded it and get this same dialog. It is authorized on my computer and use it often.
I have 3.5 gigs of files in /Library/Application Support/EZDrummer/
https://www.toontrack.com/faq/how-do-i-move-the-sounds-for-ezdrummer-2/
How do I proceed to update?