Table with Delete grayed out

I have a table with the wrong range, and I want to fix it. The problem is that Delete is grayed out and the cell range is grayed out so I can't figure out how to fix it. I would appreciate anyone's help.

Thanks,
RR

Is the workbook either:
- Protected
- Shared
- Stored on SharePoint or other cloud based storage
- Opened in Excel online rather than the desktop version?

BSB