The Lite version just has one simple function: cut a selection into 2 fragments. You can do this as much as you want, further dividing islands, but that's it. On the other hand, the full version lets you have:

• Multiple cuts in a single operation
• Randomization controls for different patterns
• Non-flat cuts (and controls for this)
• Some debug settings

If you got the Lite version and want to upgrade, you just need to pay the difference (instead of paying the full price) - make sure you do this through the same blendermarket account you originally used.

• Biggest thing to do is hit Ctrl + A (apply transforms hotkey) and apply scale only.
• Reroll (different seed)
• Use the 2 debug checkboxes
  
  

Yes! You have perpetual free updates when they happen.

In general you install Fracture Volume by appending it to the asset browser. You do this just like any other asset library. Here is a tutorial:
make sure that you're giving the path to the root folder, not the .zip!

Make sure:

• You are using Blender 4.0 or above
• You've added the asset library file path and refreshed the library (this is the most common symptom, sometimes assets don't load until you drag them onto the scene) - if you cant find the tool in the CGMatter folder, some people have it in the unassigned section of the asset broswer
• Reopen Blender after updating the asset library

if none of these works, get in contact with me.