Hello! I understand you're having trouble logging into the Ocado app using the Firefox browser on your Windows 10 device. To help you better, could you tell me if you’re seeing any specific error messages when you try to log in? Also, have you tried logging in with any other browsers to see if the problem is specific to Firefox?

In the meantime, here’s a step-by-step approach that usually resolves login issues on Firefox:

1. Enable Cookies for Ocado: The Ocado login page requires cookies to work properly. Make sure cookies are enabled in Firefox’s settings.

2. Clear Cache and Cookies: Old or corrupt cookies/cache can block login. Go to Firefox settings > Privacy & Security > Cookies and Site Data > Clear Data, and clear both cached web content and cookies.

3. Check Extensions/Add-ons: Sometimes browser add-ons like ad blockers or privacy extensions interfere with login. Disable these temporarily to see if that helps.

4. Try Private Browsing Mode: Open a new private window (Ctrl+Shift+P) and try logging in. This disables extensions and starts fresh, which can isolate the problem.

5. Update Firefox: Ensure your Firefox browser is up to date, as older versions might cause compatibility issues.

If you have tried these already or if you notice anything unusual during these steps, please let me know. I’ll guide you further and can look into any server status or network-related issues if needed.

Are you seeing anything like a service error or page not loading? That sometimes happens if servers are temporarily down. Let me know!