Website & eCommerce -> Configuration

Setting Default Website

Enable Debug Mode: Go to Settings > Technical > Settings and enable "Debug Mode."

1. Find default_website: Go to Settings > Technical > External IDs and search for default_website 
2. Change External ID: Replace the existing external ID with the external ID of the website you want to set as default.

Important Notes:

Multiple Websites: If you have multiple websites, ensure they are properly configured and have distinct domains or subdomains.
Website Switcher: Odoo usually provides a website switcher in the user interface, allowing users to easily switch between websites.