Zoom argument doesn′t work in shortcode

Hi! I have this shortcode, [szbd ids=”2600,2598,2596,2593,2588″ title=”Delivery zone” color=”blue,red,green,yellow,orange” zoom=”15″ interactive= “true” ] but I can’t get the “zoom” to work, no matter what number I put, the map view is always the same.

How can I solve it?

Regards!

The page I need help with: [log in to see the link]