Texture issue.

I’m a starter at Verge3D and have only watched the Swiss Army Knife tutorial so far, which I could finish successfully. Now I’m doing some experiments with a model my friend made but I’m having problems with the textures. The difference from both of the two projects is that one used image as textures and the other used Blender shading only. I’ve attached images where you can see what happens after I open the model with HTML or GLTF.

Plus, I’m getting this issue with the camera (third image that I uploaded) that I think is something simple, but as I’m already here, asking for help about it too.

I appreciate your help in advance. If you refer to other posts or tutorials, this help is also very welcome.

Thank you very much.