Hi! I see you're having trouble logging into the eviivo app. To get started, could you please tell me if you're seeing any specific error messages or if the app behaves in any particular way when you try to log in? Also, are you using the mobile app or the web version on your Windows device?

In the meantime, here are some initial steps you can try:

1. Double-check that your username and password are correct. If you're unsure, try using the "Forgot password" link to reset it.
2. Make sure your internet connection is stable.
3. Clear your browser cache and cookies if you're using the web version.
4. Ensure your app or browser is up to date.
5. Try logging in from a different device or browser to see if the issue persists.

Let me know what happens after these checks, and if you can share any error messages, I can guide you further from there!