How to change product category in homepage:
1. Go to sp page and select home page
2. scroll down to find the module
3. Click edit and view the module in used
4. See which module in used
5. Go to module and search the module
6. Click into the module and go to tab 'Hikashop Options' and find 'Data display'
7. You will able to see the category selected, and you can change to the category that you want
8. For example, change to 'Mooncake Gift' and save
9. Go to home page, the category will changed successfully
