But you averaged 14k in the season before you went up. When you went up you averaged over 23k. Why does that make you think you would have had more people through the gates? You are not using logic here. Are the 9k you have increased all JCLs? Are you?
Your catchment area is actually very small, it is basically Croydon. Anyone in that area can get to Arsenal, Tottenham, West Ham, Chelsea in no time at all, you don't have a catchment area to boast about.
You used to get very small attendances then your new stadium kicked in.
Croydon isn't the only catchment area, we also have a large fanbase all over the Surrey area. I am from East Grinstead for example.