Trade order disappearing

Matthew, trades still keep disappearing. They say “Pending” for a few seconds, then are gone. Sometimes when I reenter them, they stick, but today, one trade disappeared 2 times. It happened at 7:20 PST, at 9:49 PST and again at 10:24 PST. My system is Crude Oil Only. As you suggested last week, I’m using IE on Windows 7. I also tried Firefox, but it happened there too. Thanks for any help here.