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GA4 tracking problems usually fall into a few categories: setup errors, configuration issues, or data collection problems. Here's how to diagnose and fix each. Quick Diagnostic Checklist Check these first: 1. ☐ Measurement ID correct (G-XXXXXXXX) 2. ☐ Data stream status: Active 3. ☐ gtag.js script loading on pages 4. ☐ No JavaScript errors in console 5. ☐ Events appear in DebugView 6. ☐ Real-Time report shows activity Common Issues and Fixes Issue 1: No Data in Reports Symptoms:

• Real-Time shows nothing
• No pageviews
• No users Fixes: Network tab check: 1. Open DevTools → Network 2. Filter: google-analytics.com 3. Should see requests to /g/collect 4. If not → script not firing Issue 2: Events Not Appearing Check event naming: Event rules:
• Start with letter
• Only letters, numbers, underscores
• Max 40 characters
• No spaces Issue 3: Conversions Not Tracking Mark events as conversions: 1....