Hi,

the link you'd mentioned refers to a different trading platform - BitBay. We are the one of the most popular Bitcoin and Litecoin exchanges in Poland, operating since 2014 and supporting USD, EUR and PLN. Please, check out some publications about our platform below:
http://bitcoinwarrior.net/2015/03/bitbay-a-polish-bitcoin-exchange-with-global-aspirations/
http://cointelegraph.com/news/112530/there-are-still-millions-of-people-in-poland-who-have-never-heard-of-bitcoin-sylwester-suszek-bitbay

Also, please have a look at our official topic on bitcointalk:
https://bitcointalk.org/index.php?topic=1024193.msg11565352#msg11565352

Regards,
BitBay.net team