Hi there! I'm Pierre, here to help you get signed in to the Olivia app for your job interview. Could you please tell me a bit more about the issue you're facing? For example, are you getting an error message when trying to log in, or is the app not responding? Also, are you using your phone number, email, or Employee ID to sign in? This will help me guide you better.

In the meantime, here are some quick steps you can try:
1. Double-check your login credentials (phone number, email, or Employee ID).
2. If your company uses Single Sign-On (SSO), make sure to use that option as well.
3. Confirm you have a stable internet connection.
4. Try clearing your browser cache or restarting your browser as you're on WebKit.
5. If possible, try signing in from a different browser or device.

Once I know more details from you, I can provide more specific solutions or help troubleshoot further. How does that sound?