Hello, To use the cTrader Professional tools on two instances of cTrader with two different accounts (different brokers), you will need to acquire two licenses for the Professional tools. Each license is typically tied to a specific account or instance of the trading platform. Regarding your second question, whether it's possible to use a license purchased on another computer if not used simultaneously, it depends on the licensing terms and conditions set by the provider of the cTrader Professional tools. Some providers may allow you to transfer the license to another computer, while others may have restrictions on license transferability. I recommend checking the terms of service or contacting the provider directly for clarification on this matter. Best regards,