DiffPlug does not require a license for anything except the Simulink differ. If you need a license but don’t have one, you can get one instantly here.

To activate a provisional license, simply open Help -> Offline Activation.

Help -> Offline Activation

Then click Activate.

Click Activate

This will open a window where you can paste your license code.

Click Activate

Paste your code and click activate.

Click Activate

Your copy of DiffPlug is now licensed to use the Simulink differ!

Note: The legacy licensing system is still functional if you prefer it, and it will remain so for the foreseeable future.