Hello @Dave789,
I think the issue might be that you set a custom IP address for the TRB140 to 192.168.1.69. Could you please explain why you did this? I’m not quite sure of the purpose behind it. By default, the TRB140 works as a DHCP server. If there’s another DHCP server in your Ubiquiti network, it could be causing issues.
If you only need the TRB140 for redundant WAN access, you can enable passthrough mode on your TRB140’s mobile interface. This will allow it to function simply as an “internet source via an Ethernet cable”, which should make management easier.
If you still intend to use that specific Ubiquiti feature, I would recommend seeking advice from them.
Best regards,