WooCommerce checkout problems can directly block sales. When customers cannot complete an order, the issue should be handled with a structured technical check instead of random plugin changes.
Common causes of checkout issues
- Payment gateway configuration errors
- Theme or plugin conflicts
- Shipping zone or tax rule problems
- Required field validation errors
- Cart fragments or session issues
Start with the order flow
The best first step is to test the full order flow like a customer. Add a product to cart, go to checkout, select shipping and payment, then note the exact step where the problem appears.