Ajax template and maximum products to show

1)
I use Betheme with BeBuilder and when i use the shortcode on a page made with bebuilder, it wil not show the products. Tried all 3 template options. This also changes the layout of the page so that the footer is not displayed properly. is the plugin compatible with Betheme? For now i use the default editor in WordPress.

2)
When i use the Ajax template, the builder isn’t showing correct. The header and footer are overlapping. When i use the classic/modern then it shows correct.

3)
How can i show only 3 or 4 or 5 product in total for each category? Now it shows al products.