Hello,
http://www.unigui.com/doc/online_help/configuring-apache-for-linux.htm
In above link it is stated that
StartServers 1
ServerLimit 1
Should be adjusted as above.
https://httpd.apache.org/docs/2.4/mod/event.html
To increase max connections you can change parameters showed in above link.
Purged Nodes should go away in a few seconds. If they don't then there is a problem. You can check the log file for details.