Hello,
To begin, the box requesting a code for remote access is a new feature that has been provided with the latest update. If you follow the link as shown in the picture attached. This will take you to the login page for Toolbox Remote. The main idea for Toolbox Remote is to allow you access to the device details about your computer in terms of the test report results and other information. If you have more than one computer you can add all of them to your Toolbox remote account and it will allow you to have an overview of all your devices health.
Please let us know if you run into any issues
Meliton P.