Why can't I manage product details in my Google sales channel?

I connected to the Google sales channel yesterday and my products were approved a couple of hours ago. When I click on manage products, I can only see the product title and cannot select the gender or age group or the Google product category. Also, I’m unable to select which products I want to show on Google. Any idea why is this happening? Do I need to wait longer for the products to properly sync?

In Google Merchant Center, can you see any products listed?