Polylang: create central media library

I have use Polylang plugin created this blog website in Japanese English and Chinese languages.
while i create post in Japanese the images I uploaded will all go to Japanese media library, but when i switch post to English it doesn’t display the image in English media library.
So every time I have to upload images 3 times.
I found the way to solve this problem from this link: https://wordpress.org/
Chrystl (@chrystl):
If don’t need to translate your media titles, uncheck this option:
In Languages > Settings tab > Media: “Activate languages and translations for media”.
And you will access to your entire library by clicking on “Add media” and “Set featured image”.