Hi, thanks for e-mailing us the screenshot.
If you are using the Free version of the plugin, then it is limited to 50 products and all it’s variations.
So it is possible that the 192 products you see includes variations of 50 original products.
And also on the feed settings, I can see you didn’t assign values Manufacturer [Brand] and The Google Product Category.
Here’s video to generate a basic product feed: https://www.youtube.com/watch?v=F6gwPYQHKXw