Payu

Hello,
We develop a “Pay-U” module for WP WooComerce (http://payu-api.ru/display/PRD/Wordpress) (https://github.com/payuru/Wordpress_Woocommerce).
We suppose, you have the statistics on downloads and updates of woo by the site owners.
We have to find out, which version of WooComerce is the most popular among users? How do you think, why don’t users update WooComerce? For which versions should we develop our product?

https://wordpress.org/plugins/woocommerce/