Your app is so wrong i used only 12 xD zoom on it and count them orange 4 layers brown 5 layers and whites

You've put down "12 colors" in the palette for your artwork, but the Image Specs Tool says the picture has 70 colours in total. It could be possible that your picture was intended to have 12 colours but during the export process that changed somehow. If you could replace the upload with a file that has 12 colours then it'll be approved by a moderator