Premium Server Keeps Stopping



I’m currently running a C9 Premium server, through apache2. The server runs just fine, and until recently has run nonstop for a very long time. However, recently, the server shuts off at seemingly random times. I leave the server running so I can access it on my other devices, and sometimes even as little as a day later, the server shuts down.

The server in question is mineandcraft12/aaron_os.

I start the server via service apache2 start or sometimes with service apache2 restart.

Am I doing something wrong, or is this an issue on Cloud9’s side? How can I fix this issue?