Plugins Backend Translation

Hello,
I am working on a new e-commerce and I have recently download a plugin called Woocommerce Stock Manager. As the web page is in French I have been using loco translate and Poedit to get the front page translate and backend. But I noticed that no translation is happening on title when I created mo and po file and uploaded to my file manager of my hosting.

Anyone that could give me a guidance of what to try next as I am running out of idea to solve this issue