Hello,
You probably have a private IP address on the mobile interface your router can’t be reached from the outside world. Ask your provider for a public IP address or use another VPN (zerotier, tailscale, RMS …)
Regards,
I have public IP if I Google my address I can see the address. But also wenn I look under MOB1S1A1 I see private address 10.19.76.47/32. So Im not sure do I need Traffic or Firewall rule maybe?
Sure, you have a public address in order to be able to get out of the network. Unfortunately this public address belongs to the provider it is the address of some output interface on a router in its network.
10.19.76.47/32 is not routable no traffic or firewall rule will help you.