The only thing I can think of, and this is a stretch, but I was looking to see what Blender is (because you mentioned you have it) and apparently it can be used to change graphics and models in WoW.
When I google searched the questions “What does Blender software do?” and “Can Blender software be used to change graphics in World of Warcraft?”, this is the answer I got:
" Yes, Blender software can be used to change models in World of Warcraft with the WoWbject Importer add-on. This add-on can import models from World of Warcraft and apply game textures and materials."
Again, it’s a stretch, but it’s something to look at. If you’ve used it to change any textures or models in WoW, that would be a big no no.