Firmware Update for Matter Accessories (Through Test-Net) not reflecting in Home App

We are trying to verify our under development matter accessory's OTA firmware upgrade through Test-Net DCL. But, we are not receiving the firmware upgrade available notification in the HomeApp. We have followed the steps mentioned in the https://developer.apple.com/accessories/Apple-Matter-OTA-User-Guide.pdf

guide to configure our Test-Net profile (VID: 0x1496, PID: 0x8001). Attaching the Model snapshot for the reference:

Could you please help us understand the issue or how we can debug the same?