Hello,
Unfortunately, there is no way to change what layer the layer the map tiles are on. However, there is a workaround that is fairly simple, although somewhat tedious. The map tiles are created on the default layer, as are all gameobjects when added in the hierarchy or via spawning through code (unless otherwise specified). You could put all of your other gameobjects onto a different layer than the default, something like "game layer", so that the only thing on the default layer are the map tiles. This would allow you to still do what you want without having to change and edit the plugin code to change what layer the objects are on.
Hope this helps,
Mason
