My Custom Sights arent working, Please help

yo i watched a video about custom sights, he said explained it really good and i did it the way he explained but i STILL didnt get it.
this is the files i downloaded, the original one that i was gonna add was the prinz eugen one, it didnt work and i asked the youtuber and he said try another sight but they both dont work
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and then i made a new folder
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i added “all_tanks”
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i placed the BLK’s in the folder of all_tanks
opened war thunder


i went to sight settings
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and i opened the reticles AND presets
none of them were there😔
please help me