You may send the licensing request directly from the software via Help → Register / License… — the email will include your MAC address automatically. You may also register using the form.

Required:
   1.  Your full name and surname, or company name 
       (exactly as it should appear on the license).    
   2. Your email address 
       (used to generate your unique key). 
   3. MAC address — for Individual licenses only. Found via           Help → Register / License… in the application.   
   4. License type — Trial / Individual / Studio. 
       Note: some tools use a free daily mode instead of a 
       trial — check the tool page for available license types.