Open Support → Live chat in this site. Enter your name, an optional email, and your first message, then start the session.
The browser stores a reference code in session storage and sets a secure cookie for this device. Keep the same browser tab or session while you talk with support.
You can attach images or PDFs (size and type limits are shown on the form). If live updates pause, the page falls back to periodic refresh automatically.
When you are finished, use End chat session to clear the cookie and local code on this device.