Delete is diabled in excel right click

Hello all,

Trust all of you are doing fine and well!! 

My issue is, when I right click on any cell/ cells the 'cut' and 'delete' disabled - while I can still use the delete on the menu bar - This happened suddenly around 5-6 month ago and I am not sure what I did around that time..... Sorry!!

Can someone advice on why this is disabled and what I should do to get this enabled again, please?

I have attached a screenshot of the same here for your reference.

Warm Regards

Baala