Debugging picockpit-client problems
Pi is shown as offline
Check whether the picockpit-client service is active on your Raspberry Pi. Please open a terminal and write:
sudo service picockpit-client status
This will give you the following output, if picockpit-client is active and working correctly:

Investigate the log output next. You can dump it to a file with the following command, to send it to us, so we can analyze the problem:
sudo journalctl -u picockpit-client.service -n 1000 > /tmp/log.txt
