I am new to Magento. I want to develop a site in Magento 2 and the old site is in opencart. I want to import its products to Magento 2 via CSV file so I add some products to Magento 2 store with categories but in import/export pages no entity type in dropdown so please help me coz I am unable to import or export data.
Here are the screenshots of both pages below:
Import page
Export page 
PLEASE tell me why it's not showing the options such as products, categories etc..
i will be very thankful to u for this kindness