In the cart module don't show the button of checkout

-- HikaShop version -- : 3.o
-- Joomla version -- : 3.7

Hi all, i made some test on my site and i changed default setting of hoka shop..and now in the cart module don't show the button chekout... and i don't understand how to comeback, can you help me?

you can see my test area here

thanks in advance
Marco

Ok! Nicolas, work very well
.

Thank you