Can't Acess to Web GUI

[masterain]

Hi,

I recently replaced my AT&T gateway, it assigned a LAN IP (192.168.1.64) to my OPNSense router's WAN interface by default. After I enabled the IP passthrough (similar to bright mode), I rebooted both the gateway and router. Then I found I could not access Web GUI anymore. It has the response of ERR_CONNECTION_TIMED_OUT.

When I setup the LAN interface, I set the address to 192.168.50.1 (since the gateway is using 192.168.1.x); subnet bit count to 24; enable DHCP on LAN; set IP range from 192.168.50.2 to 192.168.50.250

Currently, my devices can get LAN IP automatically by DHCP, they have Internet connections, and I can access to gateway Web GUI on 192.168.1.254.
On OPNSense CLI it shows:

LAN (re1) -> v4: 192.168.50.1/24
OPT1 (re2) ->                                        # Plan to make LAN bridge, not using right now
WAN (re0) -> v4/DHCP4: 45.28.xx.xx/22 #My public IPv4 address
                     v6/DHCP6: 2600:xxxxx/64 # My IPv6

Can anyone figure out what's the problem to the Web GUI?

[masterain]

oh, just find I can visit it from my public IPv4 address, seems like something wrong on the configuration...