In order to make sure that your school network is not the cause of the issue, you should ask your network administrator at school to whitelist our newsomatic.net domain.
Here is a small message that you can send to your admin: “News-O-Matic is a daily news application that needs to connect to its domain in order to retrieve the latest news. Please open port 80 outbound for the domain newsomatic.net for all internal IP addresses. Thank you very much for your help. If you have any questions, please feel free to contact us at: firstname.lastname@example.org ”