shipping costs are not updated

[Pau111111]

Hello Prestashoppers,

 

when I add products to an order made manually from backoffice, if with two products it has free shipping, in shipping costs the price is still shown.

 

if I select free shipping it shows me € 0 and if I return to select the shipment as not free, now recharges the real price of transport

 

to apply these rules in the orders I use this

 

Im using Prestashop 1.6.1.8

 

Thank you!