well there' 3 different medals. 1 for social(I believe the blue one) one active in the community(?) (I believe the red one) and mine is for being active with post counts(having the most posts, green one) you can view them all on vBExperience.
No problem. Sometimes it unapproves posts, I'm not really sure why. It's annoying. If you notice it happen to you again, just send me a message or something, and I'll fix it.