It is working!
You are missing much needed height on your section or column or vertical padding / margin on your heading element and then your background color (or lack thereof) conflicts with your particle color.
For anyone else, some suggestions:
1. Ensure the particles plugin installed and activated
2. Ensure you have paste your modified json code in the particles plugin json area without erasing the particleJS wrapper function:
particlesJS('particles',
//your custom json code goes here
);
3. Your elementor selector appears to correctly have the particles id.
4. If applied to a section or a column, ensure there is a widget inside, even a spacer if necessary and also make sure there is enough height to visualize the effect and that your background is not white and your particle color is not white otherwise you would not see the effect. (different colors)
5. Lastly, check your browser console to check for any errors and also search within the code to ensure both your element with an id of particles exists and also the particles javascript file and json code is being included.
