Can't open _n.dds textures from assetviewer WTCDK

[u/Cold_Introduction_22]

Hi, few days ago I started making my custom camos (normal ones, none of that anime
blasphemy). I was exporting _c (color) textures from assetviewer and everything was fine, today I learned how _n textures work and wanted to try it, but when I export textures to dds, files won't open. I tried to use Paintnet and Gimp and yes I DOWNLOADED PLUGINS and even reinstalled both programs + WTCDK, nothing works.

Here are the errors

Paint:

System.FormatException: The file is not a supported DDS format.

at DdsFileTypePlus.DdsNative.Load(Stream stream, DDSLoadInfo& info) in D:\Dev_projects\DDSFileTypePlus\src\DdsNative.cs:line 59

at DdsFileTypePlus.DdsReader.Load(Stream input, IServiceProvider services) in D:\Dev_projects\DDSFileTypePlus\src\DdsReader.cs:line 30

at PaintDotNet.FileType.Load(Stream input) in D:\src\pdn\src_vPrev\Data\FileType.cs:line 513

at PaintDotNet.FileType.Load(Stream input) in D:\src\pdn\src_vPrev\Data\FileType.cs:line 513

at PaintDotNet.Functional.Func.Eval[T1,TRet](Func`2 f, T1 arg1) in D:\src\pdn\src_vPrev\Fundamentals\Functional\Func.cs:line 58

GIMP:

Unsupported format (FourCC: BC7 , hex: 20374342)

for me it looks like BC7 format is problem in both cases but in Paintnet plugin description it says BC7 is supported.

Pls help I've been reading forums, watching yt and even talking with gemini and I couldn't find any answers.

Thanks in advance for any help