what are the basic currencies except for euro?

https://investchambers.com/     

Invest Chambers is an unregulated trading platform with its domain for sale now.

As we tried to go to this broker's website using the link provided in your question, we found its domain is currently for sale. It is a bad sign for a broker, showing that it may provide financial services or products without authorization.

More importantly, The National Securities Market Commission (Spanish CNMV) has issued a warning against Invest Chambers to caution investors about this broker. You can check the full warning from here.

The truth is, Invest Chambers 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. As for the question you asked, we would like to recommend traders stay away from unregulated brokers like Invest Chambers and trade with licensed brokers.