Cannot install a custom sight from live.warthunder.com?

hi i wanna ask you guys why theres my user sight from live.warthunder.com its not working, even with the lastest custom gun sight, oh ya theres no folder called all_tanks, can you guys help me out? and no any preview on gun sight settings

Create folder structure like this:
image
and this file is the old Blanko file u used to get, in that folder (the all_tanks folder)u need to put the sight from live.warthunder in and then select it in the sights menü ingame
exp_class_sight_1.blk (1.9 KB)

yea i had the same problem i just gave up