Add IP4

Hello,
I just wanted to store a second IP address in the CWP.
I used the IP Manager, which is located in the admin panel.
He creates the following file:

ifcfg-:1
with the following content

    DEVICE=:1
    TYPE=Ethernet
    ONBOOT=yes
    NM_CONTROLLED=no
    BOOTPROTO=static
    IPADDR=5.199.130.204
    NETMASK=255.255.255.255
    GATEWAY=91.194.84.1

when I enter the command

    service network restart
    I get the following message
    [root@cpanel network-scripts]# service network restart
    Restarting network (via systemctl):
    ** (pkttyagent:19657): WARNING **: 18:17:04.966: Unable to register authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject
    Error registering authentication agent: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: Cannot determine user of subject (polkit-error-quark, 0)
    [ OK ]

but with the command ifconfig I cannot see the new IP address

    [root@cpanel network-scripts]# ifconfig
    docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
    inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
    ether 02:42:80:6b:74:bf txqueuelen 0 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
    enp1s0f0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet 91.194.84.77 netmask 255.255.255.0 broadcast 91.194.84.255
    inet6 fe80::225:90ff:fee1:a1cc prefixlen 64 scopeid 0x20<link>
    ether 00:25:90:e1:a1:cc txqueuelen 1000 (Ethernet)
    RX packets 896454492 bytes 77246656595 (71.9 GiB)
    RX errors 0 dropped 121675 overruns 21 frame 0
    TX packets 328489556 bytes 321552938430 (299.4 GiB)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
    device memory 0xfea80000-feafffff
    enp1s0f1: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
    ether 00:25:90:e1:a1:cd txqueuelen 1000 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
    device memory 0xfe980000-fe9fffff
    lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
    inet 127.0.0.1 netmask 255.0.0.0
    inet6 ::1 prefixlen 128 scopeid 0x10<host>
    loop txqueuelen 1000 (Local Loopback)
    RX packets 28795464 bytes 8187828621 (7.6 GiB)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 28795464 bytes 8187828621 (7.6 GiB)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
    virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
    inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
    ether 52:54:00:d8:74:c8 txqueuelen 1000 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

Why?