The reasons for the removal of the software include market competition issues and copyright issues.

1. Market competition issues: Night trains are facing fierce market competition. The market for music apps is very competitive, and users can choose from many other apps to listen to music. If the service quality of Night Train is not as good as other applications, it will lose users, which is one of the reasons why Night Train was removed from the shelves.

2. Copyright issues: Night Train once provided a service where users could download music for free, but these music were not authorized by the artists or copyright owners. As a result, this practice can lead to legal action and copyright issues.