I found an error that only occurred in MV. I uploaded a new version (1.0.1), please try again.
Viewing post in Beast Capture for RPG Maker MV & MZ comments
Please remove and re-add the plugin to ensure the default plugin parameters are used.
When the game displays a 100% success rate but capturing still doesn't work, then you already did everything just right, and my plugin was probably blocked by another plugin. When the "capture status HUD" is not even shown at all, then the plugin didn't start successfully at game launch.
In both cases, disable all other plugins and try again.

A demo is not planned right now. A demo is great for larger plugins, but IMO it's a bit overrated for smaller plugins where a demo doesn't provide any additional information. It is also additional work for me that, when you want to make it right, goes beyond simply uploading MV&MZ zip files.
The "How to" section already demonstrates everything you need to know to use my plugin: https://aerosys.blog/capture