In the context menu of excel, the commands to insert and delete a row disappeared, how to return?

Question

excel

Good afternoon!
In an excel document, when you right-click on a row or column, the commands that allow you to insert a new row or delete an existing one have disappeared. In another document, these commands are. New documents also lack such buttons. They remained on the taskbar, but this is very inconvenient. Someone faced such a problem? How to return these functions to the context menu?
Office 365 license. Tried to restore the office using Microsoft. on another laptop with the same file, there is no such problem.

SOLUTION: Reinstall Add-ins. File - Options - Add-ins

photo here, sorry for the quality

Answer 1

SOLUTION: Reinstall Add-ins. File - Options - Add-ins