Camera shows a grey screen on Desktop app. OK on Web app. Tried restart, reinstall, privacy settings

My camera just shows a grey screen on my Zoom desktop app.

It's fine on the zoom web app and on my laptop's camera app. Running Win 11 Home.

I've tried:

- Restarting computer

- Re-installing zoom workplace app

- Checked camera privacy settings

- Checked for laptop driver updates 
None of which have worked

I'm on a paid account and haven't been able to use this for work! I've been using my zoom on my mobile phone as a workaround, but that's not a long-term solution.