Your English is just fine!
Looking at this, I would normally say that it is calculating the shipping correctly, but that the shipping settings are not giving you the right results.
Go carefully over all of your shipping calculations and ensure that it is going to give you the correct result.
I'm assuming the same situation applies to you tax calculation. Have you enabled a suitable tax method in the Back Office tax page?
I don't know if the language applied to the website has any affect on this. Check everything else again carefully first.
Regards
Rob
Looking at this, I would normally say that it is calculating the shipping correctly, but that the shipping settings are not giving you the right results.
Go carefully over all of your shipping calculations and ensure that it is going to give you the correct result.
I'm assuming the same situation applies to you tax calculation. Have you enabled a suitable tax method in the Back Office tax page?
I don't know if the language applied to the website has any affect on this. Check everything else again carefully first.
Regards
Rob