Some Text on Same Plugin Fail to Translate

Hi, I’ve been use this plugin for a while. It help me a lot translating most of my site.

I have problem translating this plugin https://woocommerce.com/products/woocommerce-points-and-rewards/
Some of text is successfully translated using Loco editor. But some other are not.
Is there any way to find out what cause it?

Even directly change the original text at source file is not working.