Hi there! I understand you're having trouble with none of the PCH games loading on your Mac running OS X 10.15.7. Let's work together to get this fixed.

First, can you tell me how you're trying to access the games? Are you using a particular web browser like Safari, Chrome, or Firefox? Also, have you noticed any error messages or behaviors when you try to load the games?

In the meantime, a common and effective first step is to clear your browser's cookies and cache—sometimes stored data can interfere with loading games properly. Here's how you can do it on Safari, which is the default browser for macOS:

1. Open Safari.
2. In the top menu bar, click on "Safari" > "Preferences."
3. Go to the "Privacy" tab.
4. Click on "Manage Website Data..."
5. Then click "Remove All," and confirm.

After that, restart Safari and try loading the games again.

If you're using a different browser like Chrome or Firefox, let me know, and I can provide the steps specific to that browser.

Also, make sure any ad blockers or third-party plugins are disabled temporarily, as they can sometimes block game content.

Let me know how that goes, and we'll move on to the next step if needed!