Incomplete ARP table when using a WiFi hotspot

I am trying to access a server through a device by connecting to a laptop WiFi Hotspot

But when I create the WiFi Hotspot like this:

nmcli con add type wifi ifname wlp1s0 con-name Hotspot autoconnect yes ssid Hotspot
nmcli con modify Hotspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared
nmcli con modify Hotspot wifi-sec.key-mgmt wpa-psk
nmcli con modify Hotspot wifi-sec.psk "1234567890"
nmcli con up Hotspot

And then connect the device (a phone, for example) to the Hotspot it gets the IP 10.42.0.XXX, therefore I acces to a docker container (with port 8080 exposed) inside the PC by typing 10.42.0.1:8080. I get the NGINX welcom page as expected, but I would like to use the range 192.168.x.x/24.

So I run the following commands in between the other ones:

nmcli con modify Hotspot ipv4.addresses 192.168.5.0/24
nmcli con modify Hotspot ipv4.gateway 192.168.5.1

But this way it doesn't work as expected.
I realized that without setting the IP range I have the following config:

$ ifconfig wlp1s0 && route -n

wlp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.42.0.1  netmask 255.255.255.0  broadcast 10.42.0.255
        inet6 fe80::30ab:dc89:3b7d:e101  prefixlen 64  scopeid 0x20<link>
        ether a8:93:4a:9b:be:f1  txqueuelen 1000  (Ethernet)
        RX packets 21617  bytes 11699951 (11.6 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14221  bytes 2157291 (2.1 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
10.42.0.0       0.0.0.0         255.255.255.0   U     600    0        0 wlp1s0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 docker0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 br-179cb5c6e48f

But if I set the IP range:

$ ifconfig wlp1s0 && route -n

wlp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.5.0  netmask 255.255.255.0  broadcast 192.168.5.255
        inet6 fe80::d001:c40e:19c3:7b5b  prefixlen 64  scopeid 0x20<link>
        ether a8:93:4a:9b:be:f1  txqueuelen 1000  (Ethernet)
        RX packets 21617  bytes 11699951 (11.6 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14276  bytes 2165964 (2.1 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.5.1     0.0.0.0         UG    20600  0        0 wlp1s0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 docker0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 docker-bridge
192.168.5.0     0.0.0.0         255.255.255.0   U     600    0        0 wlp1s0

So I thought that if changed the differences manually (set the interface IP and the route) it would work again. So I runned:

nmcli con add type wifi ifname wlp1s0 con-name Hotspot autoconnect yes ssid Hotspot
nmcli con modify Hotspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared

// New commands
nmcli con modify Hotspot ipv4.addresses 192.168.5.0/24
nmcli con modify Hotspot ipv4.gateway 192.168.5.1
///////////////

nmcli con modify Hotspot wifi-sec.key-mgmt wpa-psk
nmcli con modify Hotspot wifi-sec.psk "1234567890"
nmcli con up Hotspot

// New commands
sudo ifconfig wlp1s0 192.168.5.1 netmask 255.255.255.0
sudo route add -net 192.168.5.0/24 dev wlp1s0
///////////////

So I end up with the same config that worked but using 192.168.x.x

wlp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.5.1  netmask 255.255.255.0  broadcast 192.168.5.255
        inet6 fe80::1f9f:4fbf:1b61:1da7  prefixlen 64  scopeid 0x20<link>
        ether a8:93:4a:9b:be:f1  txqueuelen 1000  (Ethernet)
        RX packets 21617  bytes 11699951 (11.6 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 14413  bytes 2188200 (2.1 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 docker0
172.17.0.0      0.0.0.0         255.255.0.0     U     0      0        0 docker0
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 docker-bridge
192.168.5.0     0.0.0.0         255.255.255.0   U     0      0        0 wlp1s0

But this way I can't even connect to the Hotspot! On another hand if I set the IP addres throug the nm-connection-edit gui, the devices can connect to the hotspot but they don't even appear in the arp table and no listening service can be accessed.

What I am missing? iptables dosn't change so I don't have to modify it.

Thanks.