How to Configure Your Void Platform Size and Material
Find the Config File
This mod stores its settings in a config file generated in your instance's config folder after first launch. Open it with a plain text editor while the game is closed. Look for options related to the platform — the mod exposes the platform's size and the block material it is built from.
Change Size and Material
Edit the size value to control how large the starting platform is. A larger platform gives you more room to build immediately; a smaller one saves on rendering and keeps things minimal. The material option controls which block the platform is made of, so you can set it to something you like working with instead of the default. Save the file when done.
Apply the Changes
Restart Minecraft so the config reloads. New void dimensions (or newly generated platforms, depending on how the option is applied) will use your updated size and material. If you already have a dimension and the change does not appear, check whether the setting only affects fresh platforms, and adjust your expectations accordingly rather than assuming the edit failed.