check boxes have all bunched up in the wrong cells after hiding rows

hi all
I am hoping you can help me
i am editing a spreadsheet where previous employees have used check tick boxes in cells.

now im not sure if this problem is due to using a different version of excell, i think the problem occured when i hid a whole bunch of rows so i could see the headings up the top.

then the next time i opened the file, all the check boxes have bunched up and moved down the page as shown.

could someone please tell me how i can either get the check boxes back where they were, there are hundreds of them.

or delete them all as they appear to be slowing down scrolling of the sheet.
I will replace them with 'y' in the cells instead.