My invoices are not sending first time around , Does anyone know why this is ? Thanks

Hello Plpgasandheating, 

Welcome to the community page, 

Do you get any error messages or anything show up at all when you try and send the invoices off for the first time? Can you try clearing your cache and cookies to all time, close the browser down, reload it and try sending a test invoice to yourself does the same thing still happen?