Hi! I understand you're able to sign into Kortext but then the app crashes and says it’s not available. Let’s see if we can get that sorted out.

To start, have you tried restarting your device since this happened? It's a simple step that can clear up temporary glitches. Also, since you're using Windows 10 with a WebKit browser, is this happening in the Kortext app or are you accessing Kortext through the browser?

In the meantime, here are some common steps to try that often resolve app crashes:

1. Restart your device.
2. If using the Kortext app, try uninstalling and then reinstalling it.
3. Log out completely from Kortext and then log back in.
4. If you had downloaded books, after reinstalling, re-download them (but keep in mind annotations or side-loaded content might be lost during reinstall).

If you’ve already tried these, let me know, and we can go deeper with troubleshooting. Also, does the crash happen immediately after signing in or after performing a specific action?

Does that sound good to start?