Hey!
If it's the same item that's getting stuck, it likely has something about it that minutely changes between when you picked up a scroll for it and when you did WRITE ACCEPT. Some items just tend to get stuck - some mechanics make the item change minutely, like bonded weapons, enhancive items, spell items, etc. that can make them sticky. You are taking the right route in asking on the boards if your item isn't delivered within 20 minutes or so. You can also ASSIST to get it looked at. I'm sorry it's causing you stress, but know that your item isn't lost, it's just stuck. Hopefully it won't keep happening, but if it does, I'm sorry!
That said, your scroll is unstuck!
~Just Jainna