Cannot access a website from pc and Android (Chrome) and cannot login to Android app of the website

I have a two nodes XT8 mesh, wher node 1 is connected to the ISP modem and node 2 is connected to node 1 via dedicated wireless backhaul.



On the ISP modem
- wifi is off
- DNS is off
- Firewall is off
- DHCP range is fixed at 192.168.1.2
- DHCP rule to assign 192.168.1.2 to router's MAC address
- Static NAT on IP 192.168.1.2
- IP 192.168.1.2 in DMZ (redundant)

On the XT8
- Firewall is on
- IP LAN is 192.168.50.1
- DHCP range is from 192.168.50.2 to 192.168.50.254
- DNS set to...

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