Landing properly can be tricky. I find if you land on the ground manually hover Anafi over the landing area and press Land, DO NOT touch any sticks. If Anafi sees any control inputs it continues to try and fly and will not power down.
"At this point, I pressed the "takeoff/landing" button but I did not release the left sticker."
Release both sticks, let Anafi loiter then press land, the props should stop almost instantaneous when it touches the ground.
