I have an issue with my custom sights. I downloaded some from Warthunder Live and copied the .blk files into the tank_sight_presets folder. In the sight customisation menu I chose my new sight but it didnt appeared on the preview. I then just saved it and hoped that it works in battle but it didnt. I also tried restarting the game but that didnt help. I also searched like 3 hours for a solution in the internet but it I got no luck. Can you help me fix that issue?
Name of the custom sight is katyusha
How it should look like:
How it looks like when I try to use it: