@Samuel_Agbola two usual suspects here. first, the workflow has to be toggled Active for the Schedule Trigger to actually fire on its schedule, running it manually or just having it open doesnt follow the schedule. second is timezone, the trigger fires in your instances timezone, not your local one, so something set for 9am can land at a different hour than you expect. is the workflow active, and whats your instance timezone versus the time you were expecting it to run?