Check the translation of the theme – https://prnt.sc/QKSt5XKwaO1X
You placed translation files into an incorrect folder with incorrect names – https://prnt.sc/IpcxSuj4Ze9z
To prevent losing translation after update, you need to move files into /wp-content/languages/themes/ folder, and rename to xstore-fr_FR.po, xstore-fr_FR.mo
or do you want to change the styling of that test? Describe the desired result in more detail.