Can't translate

I’ve followed the instructions contained in the file wp-content/plugins/excel-like-product-attribute-and-tag-manager/language/translate-how.txt
Translated the .po file using Poedit and uploaded it (and the .mo file) to the folder indicated in the instructions, but nothing happens.

Am I missing something?

https://ww.wp.xz.cn/plugins/excel-like-product-attribute-and-tag-manager/