Problem: Can't discover your device, enter settings manually

Tags: #<Tag:0x00007f325aa2dfa8>

I try to add deConz server in Node Red, but I get “Can’t discover your device, enter settings manually”.
I have also pressed Authenticate App in Phoscon Gateway advanced page.
I have added in the Palette and I can also see my sensors in HA.
Please what should I do now?
Either try to find the settings manually, but how?
Or solve the discovery error, but then also how to proceed?
Thanks in advance!