In the most recent version on Window 11, R55.15, 27.1.55.15, how do I get the Category to display on my transaction report? When clicking columns, I get CLR and AMT check boxes in duplicate by no Category box to select.
That indicates possible corruption in your Q data file.
Have you tried Validating the file? Take a backup first, and then FILE, Validate and Repair, check "Validate File" and OK.
Did that help? Please report back in either case. Further action is possible.
Also you could try clicking on the gear at the top right of the report then clicking on Reset Columns at the bottom of the list of columns.