Fee receipt not activated after no show for h1 visa interview

I attended my OFC on7th January 2015. Due to personal reasons, i missed my visa interview which was scheduled for 9th Januray2015 .I came to know that i can use the same visa fees receipt to reschedule my visa appointmnet. But the fee receipt number is not getting auto populated.When i enter my previous receipt number it says “Invalid receipt number”.Can somebody help me whether i can use the same fee receipt number. I also want to know whether i need to attend OFC again.