So you have some questions, well hopefully here are the answers.

HOW DO I INCREASE TROOP NUMBERS?

You don't, the whole point of this was to increase Unit numbers without changing the unit sizes and potentially mess with vanilla balance.

If you want to increase the unit size look for some of the actual workshop mods that do that.
*** Be warned currently the game has a hard cap of 200, if the mod states more it will probably crash the game***


HOW DO I UNINSTALL?

There is nothing to really uninstall, just unsubscribe and from within the game itself delete the save files ending with *30 units*


HOW DO I DISABLE THE MOD?

There is nothing to disable, as it is dependent on save file edits. There is literally nothing to disable. You are best to treat this like a mod that isn't save file compatible. If you want your game to be vanilla unit numbers, just start over without using any of the *30 units* save files.

DOES THIS MEAN YOU HAVE A 60 STACK WITH REINFORCEMENTS?

Yes is the short answer. Unless you have a beast machine it is recommended you turn that off.

DOES THIS SUPPORT X MOD?

Potentially yes. But I will not be doing that untill the mod development slows down , but I will consider it.