Translation of app "Calendar" is read-only in weblate

I just tried to add the German translation, but apparently this is not possible. The item is not translated on my smartphone, where the English word is displayed instead.

Where did you find it on weblate?

Nvm, I just found it: /e//Calendar — German @ i18n eFoundation: Calendar
I’ll open a ticket for it. Thanks for pointing it out!