Hi, I'm having the same issue as gfcaetano, have you resolved this? I can set the second router to AP mode and connect via wifi but can never log in to the new IP at 192.168.1.2 after following the steps in the Bridged AP setup guide.
I've moved your post to a new thread so that we can focus on the specifics of your issue...
I have a hunch about what might be happening, but if this doesn't solve the issue, let's dive deeper with configs.
If you're using OpenWrt 25.12, you need to make sure that you specify the CIDR subnet size in the IP address. It should look like this 192.168.1.2/24. If you omit the /24 the device will assume a /32 subnet size and will become unreachable.
With that in mind, did you use the CIDR notation? If not, please try it. If you did, let's take a look at the configs (prior to changing the IP) to see if there are any other possible issues.
Please connect to your OpenWrt device using ssh and copy the output of the following commands and post it here using the "Preformatted text </> " button (red circle; this works best in the 'Markdown' composer view in the blue oval):
Remember to redact passwords, VPN keys, MAC addresses and any public IP addresses you may have:
ubus call system board
cat /etc/config/network
cat /etc/config/wireless
cat /etc/config/dhcp
cat /etc/config/firewall
psherman, thank you for your response. Your suggestion to add the CIDR subnet size did indeed resolve this issue.