Don't worry about your English. It's more than readable to get your message across. It's also far better than what someone could expect me to write in another language.
Perhaps it would be better to destroy the button and then recreate it when the game is paused? That, or you could add in a flag variable to check to see if it should respond to touch.
Such as:
if game is paused {
set isPaused =1
}
For level select button
if sprite is touched and isPaused equals 1 {
do your level select stuff
}
I think destroying and recreating the sprite would be more work, but it would also be more efficient on computer resources. Though we are only talking about one sprite here so it's not a big impact. Figured I would mention it nonetheless.