So I tried to sell the weapon and shield models from this collection: https://sketchfab.com/mbesham/collections/2021-portfolio-pieces
But I got rejected for
Model(s) do not meet our technical criteria and some of the following may need further work: topology, UVs, optimized materials, thumbnails and titles
This is not specific at all and I have no idea what I even need to fix. I would appreciate any insight into this because I’m at a loss and ngl this is a huge bummer because I worked really hard on all of this.