Draftsight 2017 for mac problem with activation procedure

Hi,

I downloaded from the website the last version of DraftSight (2017 SP3), but it does not work. After I drag it to the application folder and I click it, the window for the activate the product appears, but when I click "activate", this window disappears (it seams like it crashes), nothing appens and I do not receive any email.

My operation system is OS X El Capitan 10.11.06.

Does anyone has a solution for this problem?