Help with battery camera, no internet, separate VLAN

I have an Argus 2 and I have it added to my cctv VLAN. My cctv VLAN is not allowed to the internet. I have a firewall rule that allows my LAN stateful access to my cctv VLAN. When I have the firewall rule disabled for CCTV to the internet, I can access the Argus via the reolink app. As soon as I disable internet access, the Reolink app stops connecting to the Argus.

Reading Reolink docs, the app should be able to work locally on my LAN to access the Argus without requiring internet.