@Journey62017
With your permission, if I may recommend you, insert the file (without sensitive data). Based on this file, explain where and for which cell / area or worksheet the problem is.
Knowing the Excel version and the operating system is of great advantage (especially for you) in order to get a solution proposal / offer quickly and precisely.
Here is a link with information on how you can come up with a solution proposal quickly and precisely.
Welcome to your Excel discussion space!
In your case there could be various possible causes, although it points to a cellblock (if you can click on other cells), but without the file I can only guess.
Here is two links with information for the cell lock.
Lock cells to protect them
Lock or unlock specific areas of a protected worksheet
Thank you for your patience and understanding
NikolinoDE
I know I don't know anything (Socrates)
