Hello Tatiana,
It seems as if your cloud node has stopped running after you restarted the server. Please try to start it through the terminal. What you want to start is the file called run-cloudnode.sh
What you can try to do is to open the terminal and then type in:
cd followed by the path to the run-cloudnode.sh file. The easiest thing is to just type in cd and a space and then drag in the run-cloudnode.sh file to the terminal window. Then press enter.
Kind regards
Edwin
HansaWorld