Hi,
First, can you please try to re-download HikaShop 2.4.0 ; we just include some patches that we provide in other thread about the shipping.
(like this one :
www.hikashop.com/forum/install-update/87...-upgrade.html#198519
)
By downloading the latest package, you will retrieve some recent patches ; it will be easier for you that applying these patches manually.
About shipping for guests ; I don't know if you're talking about "guest checkout" or checkout when you are not log-in.
Because plugins like UPS requires an address to be able to provide shipping quotes ; without an address to know where to ship the products to, the plugin won't provide anything.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.