MODIFICATION

Please in which file can I find this "The total of your order is too low for all the possible shipping methods" I would like to add something to it

Hi,

This is in the language file, you can override this translation via the menu Configuration > Languages, edit your language file and add the key + translation in th override part.

ORDER_TOTAL_TOO_LOW_FOR_SHIPPING_METHODS="The total of your order is too low for all the possible shipping methods"