Failing to Authenticate Doorbird D1101v

New to both HA and this community so hope I am asking for help in the right place - if not, please tell me where to go (politely!).
Running HA 2026.2 and my (fixed IP) POE Doorbird has been discovered. I have set up a new user with all permissions bar relay (as I don’t have a relay). Entering this data results in a “failure to authenticate”.
I have double checked the entered data / IP address and am convinced that my cutting and pasting is accurate.
I do note that HA includes the Wi-Fi MAC address of the Doorbird when it is the LAN MAC that is conencted to the network - both HA and Doorbird are on the same network.
Would appreciate any suggestions as to how I can get teh Doorbird to appear in HA.
Thanks.

In hope that you resolved you problems. If not, here are some places to start.

Are you sure about IP adresses?
Can you reach Doorbird via WiFi or LAN adress?
Do you see anything in the logs? Does Home Assistant receive any error from Doorbird?