all the rows of my spreadsheet have been duplicated into each row!
I created a spreadsheet with 1 header row and entered values in 21 rows and 14 columns. When I re-opened the saved file, the first row now has all 21 rows squeezed into it. Apparently I entered data in the header row and header column. Can't find a way to delete the row with all the data rows embedded in it. Help?
iMac (M1, 2021)