Getting Errors After Installation and Adding some IPs

[robertolito]

I installed successfully. I have not yet turned off testing. I don't want to turn it off until I see that it's working but I don't know if not turning it off could be the cause of the errors.
I am getting these errors when Restarting CSF:

Job for lfd.service failed because a fatal signal was delivered to the control process. See "systemctl status lfd.service" and "journalctl -xe" for details.
lfd.service - ConfigServer Firewall & Security - lfd
Loaded: loaded (/usr/lib/systemd/system/lfd.service; enabled; vendor preset: disabled)
Active: failed (Result: signal) since Tue 2020-03-24 10:32:15 CDT; 23ms ago
Process: 31610 ExecStart=/usr/sbin/lfd (code=killed, signal=KILL)

Mar 24 10:32:15 xxxxxxxx (my xx instead of actual hostname).com systemd[1]: Starting ConfigServer Firewall & Security - lfd...
Mar 24 10:32:15 xxxxx.com systemd[1]: lfd.service: control process exited, code=killed status=9
Mar 24 10:32:15 xxxxxx.com systemd[1]: Failed to start ConfigServer Firewall & Security - lfd.
Mar 24 10:32:15 xxxxxxs.com systemd[1]: Unit lfd.service entered failed state.
Mar 24 10:32:15 xxxxxxx.com systemd[1]: lfd.service failed.

I was recommended this firewall as a good one. If I am having problems from the very beginning, I don't know if it can be trusted.