I cannot modify, resize, delete or add new tile onto Win 10 start menu, what can I do?

[Windows Central Question]

I cannot modify, resize, delete or add new tile onto Win 10 start manu

I cannot modify the tiles in my Start menu at all. Turn on/off live tiles is the only setting I can change.
Resize, pin to start, unpin from start doesn't appear, and I cannot drag&drop the tiles on, off or around the start menu.