please anyone know how to make Open Litespeed allow unlimited vhosts/domains and unlimited concurent connections?

the Litespeed is awfully limitted (as you can see on the below link), so i even dont bother trying it on production server, because it would cost half of the server rental.

Litespeed shop: https://store.litespeedtech.com/store/cart.php
Comparison & restrictions: http://litespeedtech.com/index.php/products/litespeed-web-server/editions