Hello Saddiqua
Thanks for posting Microsoft Community. I'm Marcos Independent Advisor.
If you have changed the Language from Office setting and it is not working then:
How do you have configured the language in Windows 10?
Check that Language in Windows 10 is in English and then Try to change again in Office.
If that is not working I suggest to do a Repair Office apps:
Open Control Panel - Programs and Features
Click Microsoft Office in the list of installed applications
At the top, click 'Change'
On the resulting dialog, click 'Repair' - choose the online repair.
more details here:
https://support.office.com/en-us/article/repair...
Also, check to see if you have more than two copies of Office and then uninstall the version is not using, it's possible that old version of Office could be causing the issue.
Let me know how it goes or you need further assistance.
Regards.