Where do you change the default language in PrestaShop?

The default language in Glotio is the source language when all translations begin. This is important because Glotio understands that your website content started from that language in your platform. Glotio only recognizes the ISO code you set.

You can set up the default language in PrestaShop in “Localization”:

Once you select it and change it from the Glotio panel, click on Relaunch for the translation system to detect the change.