The Financial Conduct Authority from Great Britain has put Brokerz Union on its blacklist.
Brokerz Union offers cryptocurrencies trading, but apparently undirect trading via contracts for difference. And this type of trading is subject to regulation.
Despite being based in the UK, Brokerz Union is not registered with the FCA, therefore it is providing this type of investment services illegally. This is why the regulator warned against this broker.
For trading use regulated brokers only.