Not to be rude but I think you may have converted the models into sound files (or its just my computer if it is sorry for making you check)
yea just checked there are 2 types of .vox files so my computer got confused and opened it as a sound vox file instead of a voxel vox file (if you wanna learn more about the vox types it give the link to the article that taught me about . vox https://fileinfo.com/extension/vox) but i fixed it now