Open a web browser and go to my.goabode.com
Enter your email and password to login
On the left-hand side menu, click on "Account" and then "General"
On the right side, click on "Change Plan"
On the upper left, click on "I Already Purchased a Plan"
Enter your pre-paid Activation Code that was provided to you and then click on "Activation Service"
Create a 4-digit code when/if prompted. You will be asked for it by the Monitoring Center to verify ownership and will also need this code if you disable the alarm using Amazon Alexa, Google Assistant or Apple Siri.