It is possible that you missed a step when applying the mod.
First you need to decrypt the game, this link explains how to do it:
https://f95zone.to/threads/rpg-maker-unpacker.50/
Unzip the mod files and place them in the corresponding game folders (some files must be overwritten).
IMPORTANT: You must delete (or move to another folder) the file "Game.rgss3a"
If everything went well, this should appear:
View attachment 1476092
To activate the mod, talk to the sign with an admiration symbol on it.
(It is located next to the tavern "The Stone Dragon" on the map "Mountain Village".)
To deactivate it talk to the sign again.
If you load a save in "Mountain Village", you have to exit the map and re-enter
(e.g. enter the tavern and return to the village).
If it still doesn't work, let me know and we'll look for a solution.
Saludos