If you dont have the Trial license with you can request for from the app itself.
You will get the license key in the mail. Sometimes it takes 15 to 30 minutes to reach the inbox.
Make sure you also check the spam folder.
If you don’t get the license key you can drop a mail to support@linklibs.com
This is a 1 time activation license.
You can use it to activate either Mac OS or Windows version of the Linklibs app.
Once you have got the license key enter it in the Registration window in the App.
If you face any issues with the activation drop a mail to support@linklibs.com