How can I fix the automatic windows in my Audi A2?

I recently purchased a used Audi A2 and noticed that the automatic windows are not working properly. Whenever I try to use them, either from the driver's side or passenger's side, the windows only roll down halfway before stopping. What could be causing this issue and how can I fix it?

This could be due to a faulty window regulator. It may need to be replaced or repaired. It's best to take your car to a mechanic or dealership to diagnose and fix the issue.