TV GUI Localization Fail

The Hisense-TV of my sister in law is a perfect example for a localization fail. The menu title "Guía de Programas" is Spanish, the date format and content text as well as two navigation buttons are German (as it was supposed to be) but the other navigation buttons are in English. The most intriguing example is the English button "Next day" compared to the German button "Letzter Tag" which (incorrectly) means "previous day" (should be vorheriger Tag). You had one job...