secklin

I have started a server with my friends a few days ago. Yesterday evening everybody got kicked out of the server and it just worked again the following morning. But now we have a problem. Mobs doesn't move they seem to freeze. The world isn't loading as it should and when I enter commands into the console they don't work. And when I break or place a block it works for the moment. But when I leave the world and enter it again, every change is gone. Please help because I don't want to build everything again.

I have started a server with my friends a few days ago. Yesterday evening everybody got kicked out of the server and it just worked again the following morning. But now we have a problem. Mobs doesn't move they seem to freeze. The world isn't loading as it should and when I enter commands into the console they don't work. And when I break or place a block it works for the moment. But when I leave the world and enter it again, every change is gone. Please help because I don't want to build everything again.