When you open a controller (e.g., Engine, Instruments, or Central Conv.), the screen provides critical identification data for that specific unit: VAG Number

Once communication is established, the top half of the screen fills with data identifying the specific hardware and software in your car: VCDS Tutorial ~ How to Use VCDS Scan Tool

Check for unreliable communication, which may be indicated if the IC (Initial Communications) counter increments beyond 1. Are you trying to access a specific module