CSF is disabled in 2.3.6, there are issues with it.
we have to disable the csf because csf team is not updating the python package.
@shoaibkk Do you know which packages? I am ready to downgrade them (if possible) just to be able to use CSF. Do not want to switch from CyberPanel, but this is a big reason to do so. 
Me too : +1 !!!
they do state on the website that ubuntu 18 to 20 is supported , not that 22 is supported.
but a manual install should do the trick, just be sure to add the needed ports manual to (at own risk )
and it seems that CSF automatic disable UFW ( based on there forums )
https://download.configserver.com/csf/install.txt
Here is the solution: CSF Installation Disabled After CyberPanel Update: Firewall Settings Hidden and Installation Errors - #31 by richardevcom
This solution doesn’t work for Ubuntu 20
What exactly doesn’t work for you? Please post some error logs.