Connect to the Signitic Web application and click on the "Settings" icon in the left side menu.

Then go to the "Preferences" menu

Finally, select the desired language from the "My language" drop-down menu.
Connect to the Signitic Web application and click on the "Settings" icon in the left side menu.
Then go to the "Preferences" menu
Finally, select the desired language from the "My language" drop-down menu.