In the website, as a teacher, Configure and assignment to have grades using scales. In the app, as a teacher, navigate to that assignment including student submissions Check submissions of students. Check their feedback Change the grade scale and save. Check grade is saved. Change the grade to "No grade" and save again. Check grade is saved. Change the language of the app and browser to spanish or catalan to use a different decimal point notation, try to submit grades using the different decimal point notation ("," for spain). Check that it works. Test in real devices (Android and iPhone) with different default languages and app languages