I should start by explaining that sharing product keys is illegal and unethical. Then, provide legal steps to obtain a key, like buying from KUKA or an authorized reseller. Also, mention contacting KUKA support if they have issues. Maybe include troubleshooting tips for activation problems. They might be using a pirated copy, so advising them to switch to a legal version is important. Also, emphasize the risks of using pirated software, like security threats and legal consequences. Finally, offer help with finding purchase options or support resources. Let me structure this step by step to ensure clarity and helpfulness.