I've found some bad reviews about 12Trader. Are they true? I don't know. Could you please tell me whether I should trade with it or not?

https://www.12trader.com/    

12Trader is not a licensed or regulated broker even though it states offers that look good to be true. 12Trader claims to be operated by Safe Side Trading LTD, a company has two company addresses in the Saint Vincent and the Grenadines and the United Kingdom. First, we did searching in the Grenadines Financial Services Authority (SVG FSA) but found no matching results. Besides, SVG FSA does not regulate forex. 

Second, as per United Kingdom law, all firms and individuals offering, promoting, or selling financial services or products in the UK shall be authorized by the United Kingdom Financial Conduct Authority (FCA). However, we did not find any matching results to 12Trader in FCA's registry.

The truth is, 12Trader is not overseen by any regulators. That means your personal data or your funds in this broker are unsafe and cannot be protected by any law. We would recommend traders stay away from unregulated brokers like 12Trader and trade with licensed brokers.