Hello! I understand you're having trouble logging in to The Herald app on your Mac running OS X 10.15.7. To help you better, could you tell me a bit more about the issue? For example:
- Are you unable to enter your username or password, or is the app not responding after you attempt to log in?
- Are you seeing any error messages?
- Have you recently changed your password or created a new account?
- Is the app updated to the latest version?

Once I have a clearer picture, I can guide you more effectively through some steps to resolve this.

I can enter my name and password (hasn’t been changed) but just reverts to sign in screen

Thanks for the details! So you can enter your username and password, but the app just returns you to the sign-in screen without logging in. This usually points to a problem with the app's session or cache, or possibly a connection issue with the authentication server.

Let’s try a few things step-by-step on your Mac running OS X 10.15.7:

1. Restart the App
Close The Herald app completely—make sure it’s not running in the dock or background. Then reopen it and try logging in again.

2. Check Your Internet Connection
Sometimes, a flaky connection can prevent login. Make sure your internet is stable. You can try opening a website in your browser to confirm.

3. Clear App Cache/Preferences
The app may have corrupted cache or preferences causing this loop. Here’s how to clear them:
- Quit the app completely.
- Open Finder, then use the "Go" menu → "Go to Folder…" and enter: ~/Library/Containers/
- Look for a folder related to The Herald app (usually named somewhat like "com.herald.app"). Move that folder to the Trash.
- If you can’t find it there, also check ~/Library/Application Support/ for any Herald-related folders and move them to Trash.
- Restart the app and try logging in again.

4. Update the App
Ensure you’re running the latest app version compatible with your macOS 10.15.7. Sometimes incompatibility or bugs cause this looping behavior.

5. Try Logging in via Web Browser
Open Safari or another browser and try logging in to your account via The Herald’s website if available. If login works there, it confirms it’s an app-specific problem.

If none of these fix the issue, there might be a backend problem with account authentication or a known issue with the current app version. At that point, contacting The Herald's app support at [email protected] would be the next logical step.

Let me know which step you’re comfortable trying or if you want me to guide you through any part in detail. Are you satisfied with this approach so far?