Crunk Bunny

Hi, wondering if anyone has a fix or a reason as to why it may be happening? My server random stops and boots everyone for no real reason and stays off until started back up again. Our custom restart time is 6: 30 ish saturday morning. But the server will stop at weird times like 8 pm or noon. Connection of players is fine up until a minute before the server actually stops. No one is playing with the settings. It just stops. Not sure if this is a host side problem or something else. Any advice would be appriciated.