Getting translation files

Find language files for the core plugin on WP.org here: https://translate.wordpress.org/projects/wp-plugins/invoicing/

For addons, find translated language files at the Invoicing language project pages.

To explain the process, let’s add German to a multi-lingual wesite. The process for a single language site is the same.

1. Navigate to the Invoicing language project pages.
2. Select the language of your choice.
3. For the example, we selected German:
   
4. Scroll to the bottom of the page and Export the file (accept the defaults so you download the whole PO file):
   
5. Save the .po file in the /wp-content/languages/plugins/ folder of your local website copy on your computer:
   
6. Install Poedit on your local machine.
7. Create the MO file using Poedit:
   1. Open the invoicing-de_DE.po file using Poedit [or the PO file in your language].
   2. Save the file.
   3. That will create a matching MO file:
      
8. Now upload both PO and MO file to your site’s server using FTP.
9. Check on your site.