In Planday you can change the default language for your whole company and also for your individual account. By changing the language setting on your own account, you can override the company's default language.
Change the default language for your company
Go to Settings > General (under Portal settings on the left). From here you can change the Language via the drop-down menu. Only administrators of your company’s Planday can change the default language.
Change the language for your personal account
Select your name in the top right corner, select Edit, then update the Language from the drop-down menu.
In the Planday app go to Account > Settings & Privacy > Settings > Language, then select your preferred language.