Special characters in input on the checkout turn to ?

[stawebnice]

Hi,
I have a problem with the checkout input form - when customer enters his address on checkout with special Czech characters as č ř, it comes out on the next page as ? instead of these characters in name and address, e.g. instead of Kuřim Ku?im appears. Then it also appears in the order confirmation email

The eshop is www.pergola-pristresek.cz

I checked the database and all tables are set to UTF8_general_ci
I re-saved all template files in Dreamweaver set to UTF8

But it did not help. Please advise.