To make the glitch turn on and off, keyframe the "Amount" property, starting at 0, moving a few frames, setting it higher (e.g., 50-100), and then returning to 0.

: C:\Program Files\Adobe\Adobe After Effects [Your Version]\Support Files\Plug-ins

If you are looking for free alternatives to Glitchify, several reputable developers offer "name your own price" or completely free plugins:

Occasionally, boutique developers offer legacy versions or simplified versions of their distortion tools for community use.