When you use tray importer, don't just upload the archive it creates straight away, go over it first to see what's in it, put it in a good file structure, remove stuff that shouldn't be there like mods (Tray Importer will pick up WW and basemental drugs and all of that being used), especially script mods and big merged packages (seriously don't package and upload sims if you have big merged CC packages in your mods folder).