Why is the woo radio buttons plugin not working?

Question

Electronic commerce

Hello. I created a variable product, 315 variations. When the drop down is displayed, everything works fine and you can select the product. When I enable the plugin, the $available_variations variable returns false. And the site shows "This product is out of stock, the order is not available.".
When there are 3-4 variations on the site. The plugin works great.
I will be grateful for the answer.
Plugin
Website

Answer 1

I would not trust this plugin. It was updated 2 years ago.
I just tried to run it on one of my sites, (WP4.4, The 7.3 template) the goods are not added to the cart at all.