What do you mean make a selection for the region changer? When I log into WoT I usually get a ping in the top left, I use the mod that shows me every region, and what I ping to it, and how many people are currently on each server across the top of my screen, then I get a drop down menu with all of those servers in it to choose from. With #19 installed, I got no ping showing at the top, no list of servers at the top, and the drop down menu had nothing in it and was grayed out and not selectable. I fail to see how this state of affairs would be an option of any kind.