Spell checking?

I am running Outlook 2010 on a Windows 10 machine (at work), the mail server is gmail, and the text editor is MS Word 2019. For some unknown reason, Outlook’s automatic spell checking is not working.

When I go to Options->Mail and click on ‘Spelling and Autocorrect’, the block of options under ‘When correcting spelling in Outlook’ is grayed out. However, ‘Check spelling as you type’ is checked and if I run Outlook as Administrator, this section is not grayed out. Regardless, spell checking does not happen.

What can I try doing to make spell correcting actually work?