Please add the keyboard with cezch characters otherwise i'll bever pass this unit. Thanks.
You should be able to use MATEJ. We add it everywhere as an option (on the English side, that is). But even if it was missing (as it was here), the system should only tell you you had a typo but not penalize you.
You can easily add languages and keyboards in your phone's preferences.
Is "Matěj is one of THE eight brothers" correct too?