In order to register the Arduino Engineering kit, please follow the following instructions:
Log in or create an Arduino account here. You will need it to both register and access the Engineering kit platform.
Go to the registration page.
In the code registration box, type the number & letter combination that you can find in the product box.
Note: If the code gives an error, please take into account that all letters are capital letters and sometimes 0s (zeros) can be misread as Os (capital o) and vice-versa.
Done! Now you can access the Engineering kit platform.