If you're experiencing issues with the Cox website not loading on Mozilla Firefox, there are several troubleshooting steps you can take to resolve the problem. Here's a step-by-step guide to help you:

1. **Check Your Internet Connection:**
  - Ensure that your internet connection is stable and working correctly. Try loading other websites to verify if the issue is specific to the Cox website.

2. **Clear Browser Cache and Cookies:**
  - Cached data and cookies in your browser can sometimes cause loading issues. To clear them in Mozilla Firefox:
    - Click the three horizontal lines (menu icon) in the top-right corner.
    - Select "Options."
    - In the left sidebar, choose "Privacy & Security."
    - Scroll down to the "Cookies and Site Data" section.
    - Click the "Clear Data" button.
    - Check both "Cookies and Site Data" and "Cached Web Content."
    - Click "Clear."

3. **Disable Extensions:**
  - Browser extensions or add-ons can sometimes interfere with website loading. Try disabling all extensions and then reloading the Cox website. If it loads correctly, re-enable your extensions one by one to identify the problematic one.

4. **Try Incognito/Private Browsing:**
  - Open a private or incognito browsing window in Firefox (usually done by pressing Ctrl + Shift + P). This mode disables extensions and uses default settings. See if the Cox website loads correctly in this mode.

5. **Reset Firefox Settings:**
  - If the issue persists, you can reset Firefox to its default settings. Be aware that this will remove your bookmarks, saved passwords, and other customized settings. To reset Firefox:
    - Type "about:support" in the address bar and press Enter.
    - Click the "Refresh Firefox" button on the right side.

6. **Check for Browser Updates:**
  - Ensure that your Mozilla Firefox browser is up to date. Outdated software can sometimes lead to compatibility issues.

7. **DNS Settings:**
  - Your DNS (Domain Name System) settings could affect website loading. You can try changing your DNS settings to use a different DNS server, like Google's DNS or OpenDNS. Instructions for changing DNS settings can vary based on your operating system.

8. **Security Software:**
  - Sometimes, security software or firewalls can block certain websites. Check your security software settings to ensure that the Cox website is not blocked.

9. **Contact Cox Support:**
  - If none of the above steps resolve the issue, it's possible that there may be a specific problem with the Cox website or your Cox internet connection. Contact Cox customer support for further assistance and troubleshooting.