To activate or other products in the ExtendOffice suite, you must use a valid license name and license code provided at the time of purchase. Using unauthorized keys from third-party sites can compromise your data security and lead to software instability. How to Activate Your Kutools License
A dialog box will appear with two fields:
Ensure your system clock is correct. An incorrect date/time is a common cause of activation failures.
Once you have purchased a license from the official ExtendOffice website , follow these steps to register your software: