Hello! I understand you're having trouble with the JW Library app locking up during installation and specifically it won't load the terms of use. That can certainly prevent you from moving forward with the app.

To help sort this out on your Windows 10 device with a WebKit browser, could you let me know a couple quick things?
- Did the app install fully before locking up, or does it freeze during the install process itself?
- Have you tried restarting your computer and trying again?
- Are you installing the app from the official jw.org website or Microsoft Store?
- Do you recall if this started happening after a recent update or change on your system?

Once I understand a bit better, I can guide you step by step on how to fix the issue. Generally, the terms of use screen freezing is often related to incomplete app data or a cached file causing trouble.

In the meantime, here are some solid initial steps to try that often resolve this kind of freeze:

1. Restart Your PC to clear any temporary issues.
2. Clear App Data and Cache for JW Library:
- Since you're on Windows, JW Library stores user-specific data in your profile. You can try locating and deleting the JW Library folder inside %LOCALAPPDATA% which is accessible by typing that into File Explorer's address bar. This will remove any corrupted cache that might be freezing the app.
3. Uninstall then Reinstall JW Library from the official Microsoft Store or jw.org site to ensure your install files are fresh and complete.
4. Run as Administrator when launching after reinstalling, just in case permissions are blocking parts of the install or initial launch.
5. Check for Windows Updates to make sure your system is up to date, as missing updates can cause app compatibility issues.
6. Temporarily Disable Security Software like antivirus, as sometimes it interferes with app installations or the app loading its initial content.

If after these steps JW Library still locks up on the terms of use screen, there may be more advanced fixes involving checking Windows system files or network settings to ensure connectivity isn't blocking content load.

Would you like me to walk you through any of the above steps, or can you share more about what you've already tried? That way I can suggest the best next action.