Here is a comprehensive guide on why this happens and how to fix a revoked VCDS license. Understanding Why a VCDS License Gets Revoked
Check for updates: Ensure you are using the latest version of VCDS from the official Ross-Tech website. Vcds License Revoked Fix
If the license was revoked on a "clone" cable, the official VCDS software has likely "bricked" or deactivated the cable's internal chipset upon detecting it online. Here is a comprehensive guide on why this