You were asked questions? I have been campaigning for this for 3 months. I told them you need a pop-up
All questions need 'make model (what it is)' as first 3 words.
You are missing the
maker, but you do mention 'shredding'.
Then I also said
'There are 40,000 categories to choose from'.
You chose
'Cell Phones'.
and it's not a 'memo', it's a question. :>)
So, first of all, disconnect it from the mains for 30 minutes. If you jammed it, you were working it hard, and when it jams, heat builds up in the motor and trips the thermal protection device. They have a thermal cut out, some have a thermal fuse what need physically replacing, but most reset when they cool.
Does it work in reverse? A jam can sometimes damage the switch in the throat of the shredder, some are a mechanical switch, some are an infra-red sensor.
https://www.google.com/search?q=DM72C
..