If you'd like to change to QuickBooks Online language,
you can find it inside Advanced settings.
However, this is limited in some International QuickBooks version. To change it please follow the steps below.
Click the Gear
Go to Language
and click the small Pencil icon
Click the drop-down and choose the language.
Our supported language isEnglish, Chinese, Français, Italiano, and Español.
Let me know what you find. I’ll be right here if you need