I had this issue and found a solution. This should also update any new Google Sheets that you create.
Instructions below:
Open a new google sheet
Click on File
Click on Spreadsheet Settings
Click on Display language, This is at the very bottom left of the interface window.
Click on the Pencil next to the language
Start typing English into the search bar
Click on English
Click on Australia
Click on Select
Then Click on Save Settings
- Open a new Google Sheet
- Click on File
- Click on Spreadsheet Settings
- Click on Display language, This is at the very bottom left of the interface window.
- Click on the Pencil next to the language
- Start typing English into the search bar
- Click on English
- Click on Australia
- Click on Select
- Then Click on Save Settings
Note that it will not update the new sheet in which you made the change but it will for all new sheets created.
