The first time you launch The Boring Client you will be asked to activate the software. Here is how you get going...
Find your license key
The license key can be found in your welcome email and will look something like this, B9W2-GGVV-KK777-CUP5-TT11-J3J5-CHHY-0V9C
Activate the trial
Be sure you are on the internet and select, Start Your 30-Day Free Trial
Enter in your license key, Full Name and email as shown on your welcome email and press Activate Trial