Hi Sam,
The hackers probably added your account to some organisation whose default language is something else. Have you logged in to the account in Teams?
If so go to Settings > Accounts and Orgs. Are you able to Leave from there?
Here are some other steps you can try:
https://www.yourwindowsguide.com/2026/02/outlook-hacked-draft-email.html
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!
A Windows MVP writes content on the above website, so it is safe. However, do watch out for the ads. It should translate into your Browser language automatically.