Restart almost every day, today, disconnected from the server for 30 minutes, or not recovered, do not know what the situation
Everyone here is a customer, we can't answer that question. You should open a ticket with support via the panel. Alternatively you could provide alot more information and perhaps someone could offer suggestions.
Most likely you have over used your CPU or Memory resources. What do you see here DH panel --> VPS --> Manage Resources?