How can I mend my hedge strimmer?

Webb 20 v Lithium battery cordless hedge trimmer
Product number 1938201001
Serial number1905000112.
My strimmers blades were bent took apart to straighten put back together but although blades moving forward and back they are not cutting.
What have I done wrong is it a lost cause.
Be grateful for advice.
Miri
Mir bed, August 2023


done
Double check you've put the blades onto the drive correctly

Dbdjdj, August 2023