Are you trying to activate the latest release 4.3.1? If not then install 4.3.1 and try to activate. Older versions will not activate because I made changes to the license server a while back and older releases are not programmed to the new system.
If you are getting this message when trying to activate 4.3.1 then let me know.
- This reply was modified 1 month, 4 weeks ago by Damon Bell.