If you added a bridge so you can access your NAS from a VM application, you can follow the instructions here to the letter and be mystified why nothing works: Accessing NAS From a VM | TrueNAS Documentation Hub
So here are the missing steps
You’ll need to manually enter your default gateway and DNS servers in the Network>Global config. Before you got these via DHCP. No no more DHCP.
You’ll need to set the new br0 network for the Apps in the Apps configuration
You’ll need to set the new br0 network in each one of your VMs.
Ah yeah that’s probably an oversight in the documentation on the account that not many people are using DHCP to access their systems.
Also, possibly wrong here, but I thought apps listened on 0.0.0.0 unless specified otherwise. That is the case for me at least and I don’t think I’ve ever changed it.