Change name as it appears on beascout pin

I recently took over as SM of our troop.

While trying to update the pin on beascout.org it only allows me to put my full name (First Middle Last). Other leaders names in the dropdown only have their first and last names.
What do I do to only show my name to only show first and last?

@JDecker - the drop down lists unit members based on the name they are registered with. I am not sure if your name can only be first and last as there is the criminal background check that is based off of your legal full name. This is a question for your council.