The Minimum Round Up function in your advanced settings is disabled, which means if the calculated trade size falls below the minimum requirement of your Slave broker, the Trade Copier will ignore the trade. If you wish to round up the trade size to meet the minimum requirement of your Slave broker, you can activate the Minimum Round Up function by going to your Slave's Advanced:
Copy Settings -> click on the Advanced Settings tab-> toggle the Minimum Round Up button. Please note that the round-up will only apply to new orders after activation.