I guess you didn't bother reading the FAQ or readme included on how to use it so here is what you should do copied from the readme .
First make sure its enabled by pressing NOTE + SELECT
Second follow this steps to center the analog
- Move the analog stick to the top-left and hold it a few seconds, then release slowly until it's centered and don't
touch it anymore. Press NOTE+SQUARE,
- Move the analog stick to the bottom-right and hold a few seconds, release slowly until centered. Press NOTE+SQUARE.
- Repeat these steps until the center point has been found correctly (optimally, this is the mean value of the axes
minimal and maximal value when the stick isn't touched).
After that try a game & see it works . If not then you have to completely disable the analog completely by pressing NOTE + DOWN till the adjust value is zero or if the game require the analog check the readme on remapping choices .