Description : There are cases where the Sandbox Site Builder Web Store Categories will redirect to the live website when clicked.
Solution
- Navigate to Commerce > Websites > Website List
- Click Edit next to the desired website
- ClickAppearance subtab
- Click Web Site Theme drop down menu and change to any default NetSuite Theme , Example: Basic : Clean Lines
- Test site to see if the categories now directs to the Sandbox site. If it does, then change theme back to previous theme and it should work properly now.