Can we adjust the number of recommendations displayed within the page width?

Yes, we can adjust the number of products displayed within the page width by adjusting the height and width of the product box using below option from the preference page.

If you want to display more products, you can reduce the width and height of the product boxes, and the app will display more products. 

If you want to display less products, just increase the width and height of the product boxes, and the app will display less products.