I have 2 questions, 1. how many pictures do I get to license per month with my package 2. I licensed the same picture twice on two occasions, does that mean I lose a picture?
You have the 10 images per month plan. Any unused images are rolled over to the next month so you currently have 7 licenced images and 13 available.
The 7 licensed images were all different image numbers so it doesn't look like you have licensed the same image twice, but please provide more details if you think otherwise.