hi. how to remover an object from a scene if its not selcetable? and if its the scene itself. can you chage the scene itself?
Have you used the key from OP (the 1.21 key still works for 1.22) to unlock the "Creator" edition? Then you should be able to change any scene to anything you like and save it as your custom/edited scene.
If you can't select an atom, make sure to show "Hidden" atoms, and you should be able to select every single atom.
Only exception are "assets" (like a "Cafe", "Pub" or "Bedroom" environment), which usually consists of multiple objects which are kinda "grouped" and can't be selected individually. In that case you might want to take a look at zhfx's "
MMD VMD Player" plugin collection which contains a plugin called "SuperMode", which enables you to select/edit/delete single objects from assets, at least for some assets.