System failure. Hello Su Da "APP is a mobile micro-portal platform launched by the Data Resources and Informatization Construction Management Office of Soochow University. The "Hello Su Da" app cannot be opened due to system failure, and needs to be downloaded again. The specific steps are as follows:

1. First, enter the browser to search for Hello Su Da, and click to enter official website.

2. Secondly, find the hello Suda application to download in official website.

3. After the download is completed, you can use it by logging into your personal account.