grep '188.8.131.52' /var/log/lfd.logFrom CSF/LFD either in directadmin or in a server console. Read official guides and csf/lfd usage for more details.
thanks how i can enable it?The guide you are referring to suggests disabling LF_DIRECTADMIN in CSF/LFD. There is also an auto-installer which disables the check LF_DIRECTADMIN as well.
If you have the check LF_DIRECTADMIN enabled then you should unblock the IP directly from CSF/LFD. And CSf/LFD comes with a visual plugin whenever it's installed on directadmin server.