The WakaTime plugin for Notepad++ is open-source on GitHub.
Download the latest plugin dll from GitHub.
Save the downloaded .dll to C:\Program Files\Notepad++\plugins
Create an empty allowAppDataPlugins.xml file in your C:\Program Files\Notepad++ directory.
Restart Notepad++.
Enter your API key , then press enter.
Use Notepad++ like you normally do and your time will be tracked for you automatically.
Visit https://wakatime.com/dashboard to see your logged time.
Download the latest plugin dll from GitHub.
Save the downloaded .dll to C:\Program Files\Notepad++\plugins on overwrite the old one.
Relaunch Notepad++.
Go to C:\Program Files\Notepad++\plugins
Delete the WakaTime.dll.
Re-launch Notepad++.