Hello Medhy,
I would like to inform you that it’s obvious any custom codes/files inside the plugin will be removed on every update. In that case, the .po, and .mo files need to be inserted into the system translation directory of WordPress. So, you can insert your custom translations inside /wp-content/languages/plugins/ directory. Those files should not be affected by plugin updates.
If you have more queries related to our product, you can use our Live Chat support service.
Best regards.
