Hi there! I understand you're having trouble logging into the Engage app on your Mac (OS X 10.15.7), where it won't let you type anything and it crashed last Friday. You mentioned you've already uninstalled and reinstalled the app but the issue persists. Let's figure this out together.

First, just to clarify:
1. When you say it doesn't let you type anything, do you mean that the login fields (like username or password) are completely non-responsive?
2. Are you trying to log in via the Engage desktop app or through a web browser?
3. After reinstalling, did you restart your Mac before trying again?
4. Do you have any antivirus, firewall, or other security software that might be interfering?

Based on your answers, here are some steps to try:

1. Restart your Mac: This can clear some temporary glitches, especially after reinstalling apps.

2. Try logging in on a web browser: Open Safari or Chrome on your Mac and go to the Engage login page (https://app.engagevr.io). See if you can type and log in there. This helps isolate whether the problem is app-specific or account-related.

3. Reset your password: Sometimes login issues occur due to password problems. Head to https://app.engagevr.io/password/reset and reset your password. Also check your spam folder for any password reset emails.

4. Check for app updates: Ensure you have the latest version of Engage installed. Sometimes crashes and freezing happen due to outdated software.

5. Verify system permissions: The app might need accessibility or input permissions to detect your keyboard input. Go to System Preferences > Security & Privacy > Privacy tab > Accessibility and Input Monitoring. Check that Engage is allowed.

6. Clear app cache and settings: Sometimes stale configuration files cause issues:
- Go to Finder, click Go > Go to Folder...
- Type ~/Library/Application Support/ and hit Enter.
- Look for any Engage-related folders and move them to Trash.
- Restart the app and try logging in.

7. Create a new macOS user account: To check if it's a user-specific issue, create a new user account on your Mac and try to install and log in to Engage there.

If none of these work, we may need to check for deeper issues like corrupted files or contact Engage support for server-side checks. Let me know how these steps go and if you notice any error messages or different behavior.

Are you satisfied with these steps to start, or would you like me to guide you through any of them in more detail?