Joomla Real Estate

I'm just buying Real Estate Manager Pro. My default Language is Czech in joomla 2.5. I want to use the English Language and translate it into my Czech Language. Me but still shows Brazilian language. I If I set English as the changes back to Brazilian.
What can I do to make English the default Language?

Basic Language is not set.

Hello,

please give more details - how you take - what you show ?

By default in Reals estate manager English language.
when you go to Real estate manager - we first check site language - and check languages what we have.,
If we have site language we use it - if not have - we show English

for now - not show any language

All language translate - you need do with help Real estate language manager

But for you happened some error.

Please describe how you did that

Thanks,
ordasoft team

I've now tried:
- I switched the Language in the Administration of Joomla to the English. Front and Backend. RealEstate is then displayed correctly in English. So - OK.
- When I switched the Language in Administration back to my Czech Language, Real Estate previewed none. As it is in the Picture.

Installation of Real Estate I did to set the Czech Language in the Administration of Joomla.

Thank you for important advice in your first post: "you need do with help Real estate language manager".

I have carefully read: "How to add a new language to Real Estate manager"
ordasoft.com/Real-Estate-Manager-Documen...-estate-manager.html

I made the adescribed djustments. Now when I set the default Czech language displays text in the English Language. It is now OK.
It now remains to give you a great job with the translation ...