✅ What You Need To Do Now: 1. Sign Up for Google AdSense Use the same Google account you're using for GAM. Go to: https://www.google.com/adsense/start/ Fill in your website and personal info (even if it's basic/test content) Submit it for review 2. Wait for Approval It usually takes 1 to 3 days , but can vary Google will email you once you're approved 3. Return to Ad Manager Signup Go back to https://admanager.google.com/ Complete the same form again This time, select “Yes” when it asks if you have an AdSense account ⚠️ Note You don’t have to fully monetize your website You just need AdSense to be active so you can proceed to GAM setup You can later create a GAM test network , pull dummy data, and run API tests If you want, I can guide you through the AdSense signup steps too, or help you get a test site ready if needed.