Hello out from no where so can’t I start my server. It’s crashing and it says “Failed to bind to port” I it’s working if I change the port in server properties and also if I start the server on another computer. Does anyone know what to do? 
Hi.
If it can’t bind to a port, it is because that port is in use.
Do you have more than one minecraft server running? If so each server needs to use a separate port (not the same one).
If no it seems there are a hanging server instance blocking the new one. pry to use ps -A and see if you can se any java appletts running. Try killing them then try to start your server. Or you could simply reboot the computer running MineOS to sort out any zombie-processes