How do you know that the US30 EA trade entry condition should have been triggered?
Just because another EA opens trades on this market that doesnt mean that this EA should have?
I assume you mean that you have placed it to trade and nothing has happened yet and not that you arent getting trades on MT4 when backtesting it? What do the backtesting results show for this EA (especially regarding number of trades made per week roughly)? Also of course double check that the face is smiling in the top right corner of the chart.